Conservatorship of O.B. ( 2020 )


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  •         IN THE SUPREME COURT OF
    CALIFORNIA
    Conservatorship of the Person of O.B.
    T.B. et al., as Coconservators, etc.,
    Petitioners and Respondents,
    v.
    O.B.,
    Objector and Appellant.
    S254938
    Second Appellate District, Division Six
    B290805
    Santa Barbara County Superior Court
    17PR00325
    July 27, 2020
    Chief Justice Cantil-Sakauye authored the opinion of the
    Court, in which Justices Chin, Corrigan, Liu, Cuéllar, Kruger
    and Groban concurred.
    CONSERVATORSHIP OF O.B.
    S254938
    Opinion of the Court by Cantil-Sakauye, C. J.
    Measured by the certainty each demands, the standard of
    proof known as clear and convincing evidence — which requires
    proof making the existence of a fact highly probable — falls
    between the “more likely than not” standard commonly referred
    to as a preponderance of the evidence and the more rigorous
    standard of proof beyond a reasonable doubt. We granted
    review in this case to clarify how an appellate court is to review
    the sufficiency of the evidence associated with a finding made by
    the trier of fact pursuant to the clear and convincing standard.
    The issue arises here after the probate court appointed
    limited coconservators for O.B., a young woman with autism. In
    challenging this order, O.B. argues that the proof before the
    probate court did not clearly and convincingly establish that a
    limited conservatorship was warranted. (See Prob. Code,
    § 1801, subd. (e) [“The standard of proof for the appointment of
    a conservator pursuant to this section shall be clear and
    convincing evidence”].)
    There is a split of opinion over how an appellate court
    should address a claim of insufficient evidence such as the one
    advanced here. One approach accounts for the fact that the
    clear and convincing standard of proof requires greater certainty
    than the preponderance standard does. Courts adopting this
    view inquire whether the record developed before the trial court
    contains substantial evidence allowing a reasonable factfinder
    1
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    to make the challenged finding with the confidence required by
    the clear and convincing standard. (E.g., T.J. v. Superior Court
    (2018) 
    21 Cal. App. 5th 1229
    , 1239-1240 (T.J.).) Another position
    maintains that the clear and convincing standard of proof has
    no bearing on appellate review for sufficiency of the evidence.
    (E.g., In re Marriage of Murray (2002) 
    101 Cal. App. 4th 581
    , 604.) From this perspective, a court reviewing a finding
    requiring clear and convincing proof surveys the record for
    substantial evidence, without also considering whether this
    evidence reasonably could have yielded a finding made with the
    specific degree of certainty required by the clear and convincing
    standard.
    We conclude that appellate review of the sufficiency of the
    evidence in support of a finding requiring clear and convincing
    proof must account for the level of confidence this standard
    demands. In a matter such as the one before us, when reviewing
    a finding that a fact has been proved by clear and convincing
    evidence, the question before the appellate court is whether the
    record as a whole contains substantial evidence from which a
    reasonable factfinder could have found it highly probable that
    the fact was true. Consistent with well-established principles
    governing review for sufficiency of the evidence, in making this
    assessment the appellate court must view the record in the light
    most favorable to the prevailing party below and give due
    deference to how the trier of fact may have evaluated the
    credibility of witnesses, resolved conflicts in the evidence, and
    drawn reasonable inferences from the evidence.
    Because the Court of Appeal below took the position that
    the clear and convincing standard of proof “ ‘ “disappears” ’ ” on
    appeal (Conservatorship of O.B. (2019) 
    32 Cal. App. 5th 626
    , 633)
    2
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    when it rejected O.B.’s challenge to the sufficiency of the
    evidence, we reverse.
    I. BACKGROUND
    In August 2017, respondents T.B. and C.B. filed a petition
    in Santa Barbara County Superior Court requesting that they
    be appointed as limited coconservators for O.B., a young woman
    with autism spectrum disorder. T.B. and C.B. are O.B.’s mother
    and older sister, respectively. At the time T.B. and C.B. filed
    their petition, O.B. was 18 years old and resided with her great-
    grandmother, L.K., in Santa Barbara County.
    The public defender was appointed as counsel for O.B.
    (See Prob. Code, § 1471.) A contested evidentiary hearing was
    held in the probate court to determine whether a limited
    conservatorship should be imposed. This hearing was conducted
    across several court sessions occurring between September 2017
    and May 2018, with the probate court judge sitting as the trier
    of fact. Several witnesses testified at the hearing. Among them,
    T.B., C.B., L.K., and a cousin of O.B. testified to their
    interactions with and observations of O.B. Dr. Kathy Khoie, a
    psychologist, testified that in her opinion, O.B. was not a proper
    candidate for a limited conservatorship. Christopher Donati, an
    investigator with the Santa Barbara County Public Guardian’s
    Office, similarly testified that he did not feel a limited
    conservatorship was necessary.
    Before ruling on a limited conservatorship, the judge
    stated that he had “been involved in numerous hearings, and
    [O.B.] has been at all of them or most of them. So in addition to
    some of the different witnesses I am entitled to base my decision
    based in part on my own observation of [O.B.] at the
    proceedings.” The judge found that a limited conservatorship
    3
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    was “appropriate” and appointed T.B. and C.B. as limited
    coconservators. The parties were asked if any requested a
    statement of decision. No one did, and the judge did not
    otherwise explain in detail how he had arrived at his findings.
    He said, “I can go through and comment on everybody’s
    testimony. I don’t see any reason to do that. The reviewing
    court can look at the record.”
    O.B. appealed, raising several claims of error. The Court
    of Appeal affirmed. As relevant here, the appellate court
    rejected O.B.’s argument that the evidence before the probate
    court was insufficient to justify the appointment of limited
    coconservators. In making this argument, O.B. explained that
    the clear and convincing standard of proof applies to the decision
    to appoint a limited conservator and argued that the Court of
    Appeal “must apply the same standard in determining whether
    ‘substantial evidence’ supports the judgment.” (Conservatorship
    of 
    O.B., supra
    , 32 Cal.App.5th at p. 633.) In finding the evidence
    sufficient, the Court of Appeal observed that, contrary to O.B.’s
    position, “ ‘The “clear and convincing” standard . . . is for the
    edification and guidance of the trial court and not a standard for
    appellate review. [Citations.] “ ‘The sufficiency of evidence to
    establish a given fact, where the law requires proof of the fact to
    be clear and convincing, is primarily a question for the trial
    court to determine, and if there is substantial evidence to
    support its conclusion, the determination is not open to review
    on appeal.’ [Citations.]” [Citation.] Thus, on appeal from a
    judgment required to be based upon clear and convincing
    evidence, “the clear and convincing test disappears . . . [and] the
    usual rule of conflicting evidence is applied, giving full effect to
    the respondent’s evidence, however slight, and disregarding the
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    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    appellant’s evidence, however strong.” [Citation.]’ [Citation.]”
    (Id., at pp. 633-634.)1
    We granted review.
    II. DISCUSSION
    Our analysis of the issue before us begins with an
    explanation of the clear and convincing standard of proof and a
    survey of its various applications. We next assess how appellate
    courts have perceived their role in reviewing claims that the
    evidence before the trial court did or did not satisfy the clear and
    convincing standard. Ultimately, we conclude that logic, sound
    policy, and precedent all point toward the same conclusion:
    When reviewing a finding made pursuant to the clear and
    convincing standard of proof, an appellate court must attune its
    review for substantial evidence to the heightened degree of
    certainty required by this standard.
    A. Clear and Convincing Evidence as a Standard of
    Proof
    A “ ‘[b]urden of proof’ means the obligation of a party to
    establish by evidence a requisite degree of belief concerning a
    fact in the mind of the trier of fact or the court.” (Evid. Code,
    § 115.) “The burden of proof may require a party to . . . establish
    the existence or nonexistence of a fact by a preponderance of the
    evidence, by clear and convincing proof, or by proof beyond a
    reasonable doubt.” (Ibid.) The standard of proof that applies to
    a particular determination serves “to instruct the fact finder
    concerning the degree of confidence our society deems necessary
    1
    The Court of Appeal also rejected other claims of error
    raised by O.B. (Conservatorship of 
    O.B., supra
    , 32 Cal.App.5th
    at pp. 632-633, 635-636), none of which are presently before us.
    5
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    in the correctness of factual conclusions for a particular type of
    adjudication, to allocate the risk of error between the litigants,
    and to indicate the relative importance attached to the ultimate
    decision.” (Conservatorship of Wendland (2001) 
    26 Cal. 4th 519
    ,
    546 (Wendland); see also In re Winship (1970) 
    397 U.S. 358
    , 369-
    373 (conc. opn. of Harlan, J.).)
    “The default standard of proof in civil cases is the
    preponderance of the evidence.” 
    (Wendland, supra
    , 26 Cal.4th
    at p. 546, citing Evid. Code, § 115.) This standard “ ‘simply
    requires the trier of fact “to believe that the existence of a fact is
    more probable than its nonexistence.” ’ ” (In re Angelia P. (1981)
    
    28 Cal. 3d 908
    , 918.) The more demanding standard of proof
    beyond a reasonable doubt, meanwhile, applies to findings of
    guilt in criminal matters. (In re 
    Winship, supra
    , 397 U.S. at
    p. 364.) Reasonable doubt “ ‘is not a mere possible doubt;
    because everything relating to human affairs is open to some
    possible or imaginary doubt. It is that state of the case, which,
    after the entire comparison or consideration of all the evidence,
    leaves the minds of jurors in that condition that they cannot say
    they feel an abiding conviction of the truth of the charge.” (Pen.
    Code, § 1096.)
    The standard of proof known as clear and convincing
    evidence demands a degree of certainty greater than that
    involved with the preponderance standard, but less than what
    is required by the standard of proof beyond a reasonable doubt.
    This intermediate standard “requires a finding of high
    probability.” (In re Angelia 
    P., supra
    , 28 Cal.3d at p. 919; see
    also CACI No. 201 [“Certain facts must be proved by clear and
    convincing evidence . . . . This means the party must persuade
    6
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    you that it is highly probable that the fact is true”].)2 One
    commentator has explicated, “The precise meaning of ‘clear and
    convincing proof’ does not lend itself readily to definition. It is,
    in reality, a question of how strongly the minds of the trier or
    triers of fact must be convinced that the facts are as contended
    by the proponent. . . . Where clear and convincing proof is
    required, the proponent must convince the jury or judge, as the
    case may be, that it is highly probable that the facts which he
    asserts are true. He must do more than show that the facts are
    probably true.” (Comment, Evidence: Clear and Convincing
    Proof: Appellate Review (1944) 32 Cal. L.Rev. 74, 75.)
    Today, the clear and convincing standard applies to
    various determinations “ ‘where particularly important
    individual interests or rights are at stake,’ such as the
    termination of parental rights, involuntary commitment, and
    deportation.” (Weiner v. Fleischman (1991) 
    54 Cal. 3d 476
    , 487,
    quoting Herman & MacLean v. Huddleston (1983) 
    459 U.S. 375
    ,
    389; see also Santosky v. Kramer (1982) 
    455 U.S. 745
    , 769;
    Addington v. Texas (1979) 
    441 U.S. 418
    , 423-424; Woodby v.
    Immigration Service (1966) 
    385 U.S. 276
    , 285-286.) Other
    findings requiring clear and convincing proof include whether a
    civil defendant is guilty of the “oppression, fraud, or malice” that
    allows for the imposition of punitive damages (Civ. Code, § 3294,
    subd. (a)), whether a conservator can withdraw life-sustaining
    care from a conservatee 
    (Wendland, supra
    , 26 Cal.4th at p. 524),
    whether conditions necessary for the nonconsensual,
    2
    The clear and convincing standard also has been described
    “as requiring that the evidence be ‘ “so clear as to leave no
    substantial doubt”; “sufficiently strong to command the
    unhesitating assent of every reasonable mind.” ’ ” (In re Angelia
    
    P., supra
    , 28 Cal.3d at p. 919.)
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    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    nonemergency administration of psychiatric medication to a
    prison inmate have been satisfied (Pen. Code, § 2602, subd.
    (c)(8)), and whether a publisher acted with the intent (“actual
    malice”) that must be shown for a plaintiff to prevail in certain
    kinds of defamation cases (Gertz v. Robert Welch, Inc. (1974)
    
    418 U.S. 323
    , 342).
    Going further back in time, “[t]he requirement in civil
    actions of more than a preponderance of the evidence was first
    applied in equity to claims which experience had shown to be
    inherently subject to fabrication, lapse of memory, or the
    flexibility of conscience.” (Note, Appellate Review in the Federal
    Courts of Findings Requiring More than a Preponderance of the
    Evidence (1946) 60 Harv. L.Rev. 111, 112.) This court’s early
    case law addressing the clear and convincing standard of proof
    commonly involved claims of this character, such as assertions
    that a written instrument should be reformed on the basis of
    fraud, mistake, or parol evidence. In one early case of this kind,
    Lestrade v. Barth (1862) 
    19 Cal. 660
    , we observed that when the
    correction of a mistake in a written instrument was sought in
    equity, the evidence showing such a mistake “must be clear and
    convincing, making out the mistake to the entire satisfaction of
    the Court, and not loose, equivocal or contradictory, leaving the
    mistake open to doubt.” (Id., at p. 675.) We later stated in
    Sheehan v. Sullivan (1899) 
    126 Cal. 189
    (Sheehan) that “[t]he
    authorities are uniform to the point that to justify a court in
    determining from oral testimony that a deed which purports to
    convey land absolutely in fee simple was intended to be
    something different, as a mortgage or trust, such testimony
    must be clear, convincing, and conclusive — something more
    than that modicum of evidence which appellate courts
    sometimes hold sufficient to warrant a finding where the matter
    8
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    is not so serious as the overthrow of a clearly expressed deed,
    solemnly executed and delivered.” (Id., at p. 193.)
    B. Consideration of the Clear and Convincing
    Standard in Appellate Review for Sufficiency of
    the Evidence
    The court in 
    Sheehan, supra
    , 
    126 Cal. 189
    , also addressed
    how other appellate courts had evaluated claims that parol
    evidence introduced before the trial court had not adequately
    established that a written deed instrument, absolute on its face,
    was in fact a mortgage or trust. Our opinion in Sheehan
    observed that through such matters (e.g., Mahoney v. Bostwick
    (1892) 
    96 Cal. 53
    ) the authorities “clearly declare that the rule,
    as above stated [requiring clear and convincing evidence that
    the intent was contrary to the deed’s terms], should govern trial
    courts, and that, where an absolute deed has been found to be
    something else, the sufficiency of the evidence to support the
    finding should be considered by the appellate court in the light
    of that rule.” (Sheehan, at p. 193, italics added.) In other words,
    even though the standard of clear and convincing evidence
    directly governed only the determination made by the trier of
    fact, appellate courts assessing the sufficiency of the evidence
    still had to take this standard of proof into account by
    appropriately reframing their inquiry.
    It was understood even at the time Sheehan was decided
    that this adjustment in appellate perspective when the clear and
    convincing standard applied below did not provide reviewing
    courts with a liberal license to substitute their views for the
    conclusions drawn by the trier of fact on matters such as witness
    credibility and the resolution of conflicts in the evidence. In
    Jarnatt v. Cooper (1881) 
    59 Cal. 703
    , for example, this court had
    explained, “It is doubtless a well-settled rule that the party
    9
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    alleging fraud or mistake is bound to prove his allegation by
    clear and convincing evidence. That is, that the evidence which
    tends to prove the alleged fraud or mistake, if standing alone,
    uncontradicted, would establish a clear prima facie case of fraud
    or mistake. If it does not, this Court may reverse the judgment
    on the ground of insufficiency of the evidence to justify the
    decision. But where the evidence which tends to prove fraud or
    mistake, if standing alone, uncontradicted, is sufficiently clear
    and convincing, we can not reverse the judgment on the ground
    that such evidence is contradicted by other evidence, because
    the right to pass upon the credibility of witnesses is not vested
    in this Court.” (Id., at p. 706.)
    Since Sheehan, we have reiterated — albeit sometimes
    subtly — that when the clear and convincing standard of proof
    applied in the trial court, an appellate court should review the
    record for sufficient evidence in a manner mindful of the
    elevated degree of certainty required by this standard. This
    guidance often has been coupled with language recognizing the
    limits of such review. More than a century ago, in Wadleigh v.
    Phelps (1906) 
    149 Cal. 627
    , we upheld a finding that a deed,
    absolute on its face, was in fact a mortgage. (Id., at p. 639.) In
    doing so, we expounded, “It is, of course, the universal rule that
    the presumption of law, independent of proof, is that such a deed
    is what it purports to be — viz. an absolute conveyance — and
    that this presumption must prevail unless the evidence to the
    contrary is entirely plain and convincing. This, however, does
    not mean that the evidence in the record on appeal must be
    entirely plain and convincing to an appellate court. This
    question of fact, like other questions of fact, is one for the trial
    court, and while, as said in Sheehan v. Sullivan, 
    126 Cal. 189
    ,
    193 . . . , the appellate court will consider the question as to the
    10
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    sufficiency of the evidence in the light of that rule, it will not
    disturb the finding of the trial court to the effect that the deed
    is a mortgage, where there is substantial evidence warranting a
    clear and satisfactory conviction to that effect. All questions as
    to preponderance and conflict of evidence are for the trial court.”
    (Id., at p. 637, italics added; see also Title Ins. and Trust Co. v.
    Ingersoll (1910) 
    158 Cal. 474
    , 484; Couts v. Winston (1908)
    
    153 Cal. 686
    , 688-689.)
    Several of our more recent decisions involving the clear
    and convincing standard of proof also have recognized that this
    standard affects a reviewing court’s assessment of the
    sufficiency of the evidence. In In re Angelia 
    P., supra
    , 
    28 Cal. 3d 908
    , we stated that when reviewing the sufficiency of the
    evidence supporting an order terminating parental rights,
    issued upon a finding of clear and convincing evidence (see Civ.
    Code, former § 232, subd. (a)), “ ‘the [appellate] court must
    review the whole record in the light most favorable to the
    judgment below to determine whether it discloses substantial
    evidence — that is, evidence which is reasonable, credible, and
    of solid value — such that a reasonable trier of fact could find
    [that termination of parental rights is appropriate based on
    clear and convincing evidence].’ ” (In re Angelia P., at p. 924; see
    also In re Jasmon O. (1994) 
    8 Cal. 4th 398
    , 423 [taking a similar
    view of the appellate court’s responsibility in reviewing a finding
    under Civ. Code, former § 232].) In 
    Wendland, supra
    , 
    26 Cal. 4th 519
    , where we reviewed a finding by the trial court that the clear
    and convincing standard had not been satisfied, we described
    our task as follows: “The ‘clear and convincing evidence’ test
    requires a finding of high probability . . . . Applying that
    standard here, we ask whether the evidence . . . has that degree
    of clarity . . . .” (Id., at p. 552.) And most recently, in In re White
    11
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    (2020) 
    9 Cal. 5th 455
    , 465 (White), we specified, “To deny bail
    under article I, section 12(b) [of the California Constitution], a
    trial court must also find, by clear and convincing evidence, “a
    substantial likelihood the person’s release would result in great
    bodily harm to others.’ [Citation.] . . . On review, we consider
    whether any reasonable trier of fact could find, by clear and
    convincing evidence, a substantial likelihood that the person’s
    release would lead to great bodily harm to others.”
    As respondents observe, we have on other occasions
    provided somewhat different descriptions of the reviewing
    court’s role in evaluating a finding requiring clear and
    convincing evidence. We often have emphasized the appellate
    court’s general responsibility to review the record for
    substantial evidence, even when the clear and convincing
    standard of proof applied before the trial court. (E.g., In re
    Marriage of Saslow (1985) 
    40 Cal. 3d 848
    , 863; Crail v. Blakely
    (1973) 
    8 Cal. 3d 744
    , 750 (Crail); Nat. Auto & Cas. Co. v. Ind.
    Acc. Com. (1949) 
    34 Cal. 2d 20
    , 25; Viner v. Untrecht (1945)
    
    26 Cal. 2d 261
    , 267; Stromerson v. Averill (1943) 
    22 Cal. 2d 808
    ,
    815 (Stromerson); Simonton v. Los Angeles T. & S. Bank (1928)
    
    205 Cal. 252
    , 259; Treadwell v. Nickel (1924) 
    194 Cal. 243
    , 260-
    261; Steinberger v. Young (1917) 
    175 Cal. 81
    , 84-85
    (Steinberger).) In Crail, we explained that the clear and
    convincing “standard was adopted . . . for the edification and
    guidance of the trial court, and was not intended as a standard
    for appellate review. ‘The sufficiency of evidence to establish a
    given fact, where the law requires proof of the fact to be clear
    and convincing, is primarily a question for the trial court to
    determine, and if there is substantial evidence to support its
    conclusion, the determination is not open to review on appeal.’ ”
    (Crail, at p. 750.) Respondents extract from these decisions the
    12
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    principle that appellate review of a finding made under the clear
    and convincing standard is limited to whether the finding is
    supported by evidence that is “credible, reasonable, and solid”
    — words commonly used in describing “substantial evidence.”
    (See In re Teed’s Estate (1952) 
    112 Cal. App. 2d 638
    , 644.)3
    The decisions of the Courts of Appeal also do not speak
    with one clear voice regarding how appellate review for
    sufficiency of the evidence should unfold when the standard of
    proof before the trial court was clear and convincing evidence.
    
    (T.J., supra
    , 21 Cal.App.5th at pp. 1238-1239 [discussing the
    views expressed on this subject].) One view downplays the
    significance of the clear and convincing standard of proof in this
    3
    Dissenting in 
    Stromerson, supra
    , 
    22 Cal. 2d 808
    , Justice
    Traynor wrote, “While it rests primarily with the trial court to
    determine whether the evidence is clear and convincing, its
    finding is not necessarily conclusive, for in cases governed by the
    rule requiring such evidence ‘the sufficiency of the evidence to
    support the finding should be considered by the appellate court
    in the light of that rule.’ 
    (Sheehan[, supra
    ], 
    126 Cal. 189
    , 193;
    [citation].) In such cases it is the duty of the appellate court in
    reviewing the evidence to determine, not simply whether the
    trier of facts could reasonably conclude that it is more probable
    that the fact to be proved exists than that it does not, as in the
    ordinary civil case where only a preponderance of the evidence is
    required . . . but to determine whether the trier of facts could
    reasonably conclude that it is highly probable that the fact
    exists. When it [is held] that the trial court’s finding must be
    governed by the same test with relation to substantial evidence
    as ordinarily applies in other civil cases, the rule that the
    evidence must be clear and convincing becomes meaningless.”
    (Id., at pp. 817-818 (dis. opn. of Traynor, J.); see also Traynor,
    The Riddle of Harmless Error (1970) p. 29 [“When it is the
    responsibility of the trier of fact to observe the requirement of
    clear and convincing evidence . . . it becomes the responsibility of
    the appellate court to test the finding accordingly”].)
    13
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    context. Within this group, a few courts have flatly stated that
    a requirement of clear and convincing proof before the trial court
    does not necessitate any modifications to the conventional
    approach to appellate review for substantial evidence in a civil
    matter. (Ian J. v. Peter M. (2013) 
    213 Cal. App. 4th 189
    , 208; In
    re Marriage of Ruelas (2007) 
    154 Cal. App. 4th 339
    , 345; In re
    Marriage of Murray (2002) 
    101 Cal. App. 4th 581
    , 604; Patrick v.
    Maryland Casualty Co. (1990) 
    217 Cal. App. 3d 1566
    , 1576.)
    Thus it has been said, “[t]he substantial evidence rule that
    applies on appeal, applies without regard to the standard of
    proof applicable at trial” (In re Marriage of Ruelas, at p. 345),
    meaning that a court reviewing a finding requiring clear and
    convincing proof is “not required to find more substantial
    evidence to support the trial court’s finding ‘than [it] would if
    the burden of proof had been only a preponderance of the
    evidence’ ” (Ian J. v. Peter M., at p. 208).
    Many courts have drawn a similar lesson from the Witkin
    treatise on California Procedure, which provides in relevant
    part, “In a few situations, the law requires that a party produce
    more than an ordinary preponderance; he or she must establish
    a fact by ‘clear and convincing evidence.’ [Citations.] But the
    requirement applies only in the trial court. The judge may reject
    a showing as not measuring up to the standard, but, if the judge
    decides in favor of the party with this heavy burden, the clear
    and convincing test disappears. On appeal, the usual rule of
    conflicting evidence is applied, giving full effect to the
    respondent’s evidence, however slight, and disregarding the
    appellant’s evidence, however strong.”          (9 Witkin, Cal.
    Procedure (5th ed. 2008) Appeal, § 371, p. 428, italics added.)
    The assertion that “the clear and convincing test disappears”
    (ibid.) on appeal fairly imparts that this standard of proof has
    14
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    no bearing whatsoever on appellate review for sufficiency of the
    evidence.4
    Another viewpoint regards an appellate court as obligated
    to review the record for substantial evidence in a manner
    mindful of the fact that the clear and convincing standard of
    proof applied before the trial court.5 This approach recently was
    4
    The following Court of Appeal decisions have echoed the
    Witkin treatise’s “disappears” phrasing: Morgan v. Davidson
    (2018) 
    29 Cal. App. 5th 540
    , 549; In re Alexzander C. (2017)
    
    18 Cal. App. 5th 438
    , 451; Parisi v. Mazzaferro (2016)
    
    5 Cal. App. 5th 1219
    , 1227, footnote 11; In re Z.G. (2016)
    
    5 Cal. App. 5th 705
    , 720; In re F.S. (2016) 
    243 Cal. App. 4th 799
    ,
    812; In re J.S. (2014) 
    228 Cal. App. 4th 1483
    , 1493; In re Marriage
    of E. & Stephen P. (2013) 
    213 Cal. App. 4th 983
    , 989-990; Ian J.
    v. Peter 
    M., supra
    , 213 Cal.App.4th at page 208; In re A.S. (2011)
    
    202 Cal. App. 4th 237
    , 247; In re K.A. (2011) 
    201 Cal. App. 4th 905
    ,
    909; In re Levi H. (2011) 
    197 Cal. App. 4th 1279
    , 1291; In re E.B.
    (2010) 
    184 Cal. App. 4th 568
    , 578; In re I.W. (2009)
    
    180 Cal. App. 4th 1517
    , 1526; In re Angelique C. (2003)
    
    113 Cal. App. 4th 509
    , 519; In re J.I. (2003) 
    108 Cal. App. 4th 903
    ,
    911; In re Mark L. (2001) 
    94 Cal. App. 4th 573
    , 580-581; Sheila S.
    v. Superior Court (2000) 
    84 Cal. App. 4th 872
    , 881; Ensworth v.
    Mullvain (1990) 
    224 Cal. App. 3d 1105
    , 1111, footnote 2.
    5
    E.g., Johnson & Johnson Talcum Powder Cases (2019)
    
    37 Cal. App. 5th 292
    , 333; 
    T.J., supra
    , 21 Cal.App.5th at pages
    1239-1240; Pulte Home Corp. v. American Safety Indemnity Co.
    (2017) 
    14 Cal. App. 5th 1086
    , 1125; Pfeifer v. John Crane, Inc.
    (2013) 
    220 Cal. App. 4th 1270
    , 1299; In re Hailey T. (2012)
    
    212 Cal. App. 4th 139
    , 146; In re Alexis S. (2012) 
    205 Cal. App. 4th 48
    , 54; In re Andy G. (2010) 
    183 Cal. App. 4th 1405
    , 1415; In re
    William B. (2008) 
    163 Cal. App. 4th 1220
    , 1229; In re Baby Girl
    M. (2006) 
    135 Cal. App. 4th 1528
    , 1536; In re Henry V. (2004)
    
    119 Cal. App. 4th 522
    , 530; In re Isayah C. (2004) 
    118 Cal. App. 4th 684
    , 694; In re Alvin R. (2003) 
    108 Cal. App. 4th 962
    , 971; In re
    Luke M. (2003) 
    107 Cal. App. 4th 1412
    , 1426; Shade Foods, Inc. v.
    15
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    adopted by the court in connection with a dependency
    proceeding (see Welf. & Inst. Code, § 366.21, subd. (g)(1)(C)(ii))
    in 
    T.J., supra
    , 
    21 Cal. App. 5th 1229
    . The court in T.J. observed
    that “[i]f the clear and convincing evidence standard ‘disappears’
    on appellate review, that means the distinction between the
    preponderance standard and the clear and convincing
    standard . . . is utterly lost on appeal . . . .” (T.J., at p. 1239.)
    Such an outcome was regarded as compromising “the integrity
    of the review process,” because if the clear and convincing
    standard has no bearing whatsoever on appellate review, “the
    ability of the appellate court to correct error is unacceptably
    weakened.” (Ibid.) Moved by these considerations, the court in
    T.J. concluded that it must “ ‘review the record in the light most
    favorable to the trial court’s order to determine whether there is
    substantial evidence from which a reasonable trier of fact could
    make the necessary findings based on the clear and convincing
    evidence standard.’ ” (Ibid., quoting In re Isayah 
    C., supra
    ,
    118 Cal.App.4th at p. 694.)
    All in all, it would be a fair summarization to say that
    although the trend within our more recent decisions has been to
    recognize that the application of the clear and convincing
    standard of proof before the trial court affects appellate review
    for sufficiency of the evidence, our case law also contains
    contrary suggestions that have contributed to what is now a
    significant split of authority among the Courts of Appeal.
    Innovative Products Sales & Marketing, Inc. (2000)
    
    78 Cal. App. 4th 847
    , 891; In re Kristin H. (1996) 
    46 Cal. App. 4th 1635
    , 1654; In re Basilio T. (1992) 
    4 Cal. App. 4th 155
    , 170-171;
    Osal v. United Services Auto. Assn. (1991) 
    2 Cal. App. 4th 1197
    ,
    1200; In re Victoria M. (1989) 
    207 Cal. App. 3d 1317
    , 1326; In re
    Amos L. (1981) 
    124 Cal. App. 3d 1031
    , 1038.
    16
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    C. The Clear and Convincing Standard of Proof
    Informs Appellate Review for Substantial
    Evidence
    We now dispel this uncertainty over the proper manner of
    appellate review by clarifying that an appellate court evaluating
    the sufficiency of the evidence in support of a finding must make
    an appropriate adjustment to its analysis when the clear and
    convincing standard of proof applied before the trial court. In
    general, when presented with a challenge to the sufficiency of
    the evidence associated with a finding requiring clear and
    convincing evidence, the court must determine whether the
    record, viewed as a whole, contains substantial evidence from
    which a reasonable trier of fact could have made the finding of
    high probability demanded by this standard of proof.6
    This rule finds support in logic, in the policy interests that
    are often implicated when clear and convincing evidence
    supplies the standard of proof, and in precedent. First, “[a]s a
    matter of logic, a finding that must be based on clear and
    convincing evidence cannot be viewed on appeal the same as one
    that may be sustained on a mere preponderance.” (In re C.H.
    (Tex. 2002) 
    89 S.W.3d 17
    , 25.) As we have long acknowledged
    (see, e.g., 
    Sheehan, supra
    , 126 Cal. at p. 193), the clear and
    convincing standard of proof normally applies directly only
    before the trial court; appellate courts normally do not decide
    6
    In announcing only a general rule, we recognize that
    different forms of appellate review may apply in certain
    circumstances when a determination has been made by the trier
    of fact under the clear and convincing standard of proof. (See,
    e.g., McCoy v. Hearst Corp. (1986) 
    42 Cal. 3d 835
    , 845-846
    [discussing appellate review of findings of actual malice in
    defamation suits].)
    17
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    whether they themselves believe the evidence was so probative.
    And the fundamental question before an appellate court
    reviewing for sufficiency of the evidence is the same, regardless
    of the standard of proof that applied below: whether any
    reasonable trier of fact could have made the finding that is now
    challenged on appeal. But the issue before a reviewing court in
    a given case is whether the trier of fact could have made the
    finding it did arrive upon, rather than a hypothetical finding
    involving a different standard of proof. Therefore, when
    reviewing a finding that demands clear and convincing
    evidence, an appellate court must determine whether the
    evidence reasonably could have led to a finding made with the
    specific degree of confidence required by this standard.
    Taking the clear and convincing standard into account in
    this context is also logically consistent with the principle that
    an appellate court addressing a claim of insufficient proof
    reviews the record for substantial evidence supporting the
    challenged finding. Substantial evidence is evidence that is “of
    ponderable legal significance,” “reasonable in nature, credible,
    and of solid value,” and “ ‘substantial’ proof of the essentials
    which the law requires in a particular case.” (In re Teed’s 
    Estate, supra
    , 112 Cal.App.2d at p. 644.) Respondents draw from this
    definition of substantial evidence in advocating for their
    approach to appellate review. They assert that “[s]olid, credible
    evidence is . . . by definition, clear and convincing because we
    have rationally invested with determinative significance the
    trial court’s rejection — on credibility, persuasiveness, or other
    grounds — of the evidence to the contrary,” and “[t]he evidence
    necessary to support the decision below must be credible,
    reasonable, and solid; otherwise the judgment will be reversed.”
    But these assertions ignore part of what makes substantial
    18
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    evidence substantial. Even if evidence is capable of being
    regarded as “credible,” “reasonable,” and “solid,” to amount to
    substantial evidence it also must be “of ponderable legal
    significance.” (In re Teed’s Estate, at p. 644.) And whether
    evidence is “of ponderable legal significance” (ibid.) cannot be
    properly evaluated in situations such as the one at bar without
    accounting for the heightened standard of proof that applied
    before the trial court.
    Second, keeping the clear and convincing standard in
    mind when reviewing for sufficiency of the evidence helps
    ensure that an appropriate degree of appellate scrutiny attaches
    to findings to which this standard applies. As previously noted,
    the clear and convincing standard is used for various
    determinations where “ ‘particularly important individual
    interests or rights are at stake.’ ” (Weiner v. 
    Fleischman, supra
    ,
    54 Cal.3d at p. 487.) The selection of the clear and convincing
    standard in these situations reflects “a very fundamental
    assessment of the comparative social costs of erroneous factual
    determinations.” (In re 
    Winship, supra
    , 397 U.S. at p. 370 (conc.
    opn. of Harlan, J.).) That is to say, the significant consequences
    of an erroneous true finding when these interests or rights are
    involved — such as an improper deportation, an unnecessary
    involuntary commitment, or an unjustified termination of
    parental rights — support the application of a heightened
    standard of proof, relative to the preponderance standard. Yet
    the use of a clear and convincing standard of proof before the
    trial court may not by itself completely protect these interests,
    because “the trier of fact will sometimes, despite his best efforts,
    be wrong in his factual conclusions.” (Ibid.) Admittedly, an
    appellate court that gives appropriate deference to the trier of
    fact will not be in a position to detect or correct some of these
    19
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    errors. But when a review of the record establishes that no
    reasonable factfinder could have found a matter proved to a
    degree of high probability, appellate intervention reaffirms that
    the interests involved are of special importance, that their
    deprivation requires a greater burden to be surmounted, and
    that the judicial system operates in a coordinated fashion to
    ensure as much.
    Third, our holding is more consistent with our recent
    precedent and with the case law of other state high courts than
    would be a contrary rule that would have appellate courts ignore
    the clear and convincing standard when reviewing for
    substantial evidence. As discussed ante, in In re Angelia 
    P., supra
    , 28 Cal.2d at page 924, In re Jasmon 
    O., supra
    , 8 Cal.4th
    at page 423, 
    Wendland, supra
    , 26 Cal.4th at page 552, and
    
    White, supra
    , 9 Cal.5th at page 465, we recognized that the
    applicability of the clear and convincing standard of proof before
    the trial court was relevant to appellate review of the
    evidentiary record. (Cf. Dart Industries, Inc. v. Commercial
    Union Ins. Co. (2002) 
    28 Cal. 4th 1059
    , 1082 (conc. opn. of Brown.
    J.).) Moreover, a survey of the case law of other state courts of
    last resort reveals numerous recent decisions in which these
    courts have calibrated their review for sufficient evidence to
    reflect that the clear and convincing standard of proof applied to
    the finding at issue. (E.g., In re N.G. (Ind. 2016) 
    51 N.E.3d 1167
    ,
    1170; Moore v. Stills (Ky. 2010) 
    307 S.W.3d 71
    , 82-83; In re B.D.-
    Y. (Kan. 2008) 
    187 P.3d 594
    , 606; Ex parte McInish (Ala. 2008)
    
    47 So. 3d 767
    , 778; In re B.T. (N.H. 2006) 
    891 A.2d 1193
    , 1198;
    In re S.B.C. (Okla. 2002) 
    64 P.3d 1080
    , 1083; In re 
    C.H., supra
    ,
    89 S.W.3d at p. 25; Hudak v. Procek (Del. 2002) 
    806 A.2d 140
    ,
    150; Rogers v. Moore (Minn. 1999) 
    603 N.W.2d 650
    , 658; In re
    N.H. (Vt. 1998) 
    724 A.2d 467
    , 470; Estate of Robinson v. Gusta
    20
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    (Miss. 1989) 
    540 So. 2d 30
    , 33; In Interest of Bush (Idaho 1988)
    
    749 P.2d 492
    , 495; Taylor v. Commissioner of Mental Health
    (Me. 1984) 
    481 A.2d 139
    , 153; Blackburn v. Blackburn (Ga.
    1982) 
    292 S.E.2d 821
    , 826.)
    Our approach also harmonizes with the firmly established
    rule in criminal cases that the prosecution’s burden of proving a
    defendant’s guilt beyond a reasonable doubt affects how an
    appellate court reviews the record for substantial evidence. In
    Jackson v. Virginia (1979) 
    443 U.S. 307
    (Jackson), the United
    States Supreme Court considered “what standard is to be
    applied in a federal habeas corpus proceeding when the claim is
    made that a person has been convicted in a state court upon
    insufficient evidence.” (Id., at p. 309.) The Jackson court
    decided that “the critical inquiry on review of the sufficiency of
    the evidence to support a criminal conviction must be not simply
    to determine whether the jury was properly instructed, but to
    determine whether the record evidence could reasonably
    support a finding of guilt beyond a reasonable doubt.” (Id., at
    p. 318.) The high court explained that “this inquiry does not
    require a court to ‘ask itself whether it believes that the evidence
    at the trial established guilt beyond a reasonable
    doubt.’ [Citation.] Instead, the relevant question is whether,
    after viewing the evidence in the light most favorable to the
    prosecution, any rational trier of fact could have found the
    essential elements of the crime beyond a reasonable doubt.
    [Citation.] This familiar standard gives full play to the
    responsibility of the trier of fact fairly to resolve conflicts in the
    testimony, to weigh the evidence, and to draw reasonable
    inferences from basic facts to ultimate facts. Once a defendant
    has been found guilty of the crime charged, the factfinder’s role
    as weigher of the evidence is preserved through a legal
    21
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    conclusion that upon judicial review all of the evidence is to be
    considered in the light most favorable to the prosecution.” (Id.,
    at pp. 318-319.)
    The decision in Jackson prompted this court “to review
    and define the California standard for review” of a claim brought
    by a defendant on direct appeal alleging that a criminal
    conviction lacked sufficient support in the evidentiary record.
    (People v. Johnson (1980) 
    26 Cal. 3d 557
    , 562.) We concluded in
    Johnson that the standard of review already established by our
    case law was consistent with the rule announced in Jackson.
    (Johnson, at p. 577.) “[W]henever the evidentiary support for a
    conviction faces a challenge on appeal,” we determined, “the
    court must review the whole record in the light most favorable
    to the judgment below to determine whether it discloses
    substantial evidence such that a reasonable trier of fact could
    find the defendant guilty beyond a reasonable doubt.” (Id., at
    p. 562.) We observed that when engaging in this review, an
    appellate court “ ‘must view the evidence in a light most
    favorable to respondent and presume in support of the judgment
    the existence of every fact the trier could reasonably deduce
    from the evidence.’ ” (Id., at p. 576.)
    Thus it has long been the law that appellate inquiry into
    the sufficiency of the evidence associated with a criminal
    conviction both accounts for the beyond a reasonable doubt
    standard of proof that applied before the trial court and extends
    an appropriate degree of deference to the perspective of the trier
    of fact. And with infrequent exceptions, appellate courts have
    grasped what this kind of review entails. This experience
    contradicts respondents’ argument that a rule that requires the
    clear and convincing standard of proof to be taken into account
    when reviewing for substantial evidence will encourage these
    22
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    same courts to overstep their authority by reweighing the
    evidence themselves. Out of an abundance of caution, however,
    we use this opportunity to emphasize that as in criminal appeals
    involving a challenge to the sufficiency of the evidence, an
    appellate court reviewing a finding made pursuant to the clear
    and convincing standard does not reweigh the evidence itself. In
    assessing how the evidence reasonably could have been
    evaluated by the trier of fact, an appellate court reviewing such
    a finding is to view the record in the light most favorable to the
    judgment below; it must indulge reasonable inferences that the
    trier of fact might have drawn from the evidence; it must accept
    the factfinder’s resolution of conflicting evidence; and it may not
    insert its own views regarding the credibility of witnesses in
    place of the assessments conveyed by the judgment. (See, e.g.,
    People v. Veamatahau (2020) 
    9 Cal. 5th 16
    , 35-36; People v.
    Gomez (2018) 
    6 Cal. 5th 243
    , 278, 307.) To paraphrase the high
    court in 
    Jackson, supra
    , 443 U.S. at page 318, the question
    before a court reviewing a finding that a fact has been proved by
    clear and convincing evidence is not whether the appellate court
    itself regards the evidence as clear and convincing; it is whether
    a reasonable trier of fact could have regarded the evidence as
    satisfying this standard of proof.
    This court’s precedent offers less support for respondents’
    position that appellate review for sufficiency of the evidence
    should in no way account for the clear and convincing standard
    of proof that applied before the trial court. As observed ante,
    respondents emphasize language appearing in a line of decisions
    beginning with 
    Steinberger, supra
    , 
    175 Cal. 81
    and including our
    statement in 
    Crail, supra
    , 
    8 Cal. 3d 744
    , that the clear and
    convincing “standard was adopted . . . for the edification and
    guidance of the trial court, and was not intended as a standard
    23
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    for appellate review. ‘The sufficiency of evidence to establish a
    given fact, where the law requires proof of the fact to be clear and
    convincing, is primarily a question for the trial court to
    determine, and if there is substantial evidence to support its
    conclusion, the determination is not open to review on appeal.’ ”
    (Crail, at p. 750; see also In re Marriage of 
    Saslow, supra
    ,
    40 Cal.3d at p. 863; Nat. Auto & Cas. Co. v. Ind. Acc. 
    Com., supra
    ,
    34 Cal.2d at p. 25; Viner v. 
    Untrecht, supra
    , 26 Cal.2d at p. 267;
    
    Stromerson, supra
    , 22 Cal.2d at p. 815; Simonton v. Los Angeles
    T. & S. 
    Bank, supra
    , 205 Cal. at p. 259; Treadwell v. 
    Nickel, supra
    , 194 Cal. at pp. 260-261; Steinberger, 175 Cal. at pp. 84-
    85.) Respondents assert that representations such as this
    commit this court to the position that the clear and convincing
    standard of proof has no bearing on appellate review for
    substantial evidence.
    We disagree. For starters, it is not perfectly clear that
    Steinberger and its progeny all stand for the proposition that the
    clear and convincing standard of proof’s application before the
    trial court has no effect upon appellate review for sufficiency of
    the evidence. As it appeared in 
    Steinberger, supra
    , 
    175 Cal. 81
    ,
    the assertion that “if there be substantial evidence to support
    the conclusion reached below, the finding is not open to review
    on appeal” served to clarify a point made earlier in the opinion,
    that it was the province of the fact-finder to resolve conflicts in
    the evidence. (Id., at p. 85.) Statements in our later decisions
    also could be read as stopping well short of the absolutist
    position respondents assign to them. To say that clear and
    convincing evidence is not a standard for appellate review is
    correct in the sense that an appellate court normally does not
    itself review the record for clear and convincing proof. Likewise,
    representations that an appellate court reviews the record for
    24
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    substantial evidence, without further explanation of what that
    evidence must establish, could be understood as more
    incomplete than incorrect.
    We nevertheless appreciate that the decisions
    respondents rely upon have been interpreted, and not entirely
    without reason, as casting the clear and convincing standard of
    proof as irrelevant to appellate review for sufficiency of the
    evidence. (See, e.g., Morgan v. 
    Davidson, supra
    , 29 Cal.App.5th
    at p. 549.) Even so understood, however, these decisions mean
    only that our court has in the past sent mixed signals regarding
    the issue before us. As we have explained, the clear trend within
    our recent case law, which finds support in older decisions of this
    court, has been to recognize that when a heightened standard of
    proof applied before the trial court, an appropriate adjustment
    must be made to appellate review for sufficiency of the evidence.
    We confirm today that this modern trend is correct. We
    therefore disapprove In re Marriage of 
    Saslow, supra
    , 
    40 Cal. 3d 848
    ; Crail v. 
    Blakely, supra
    , 
    8 Cal. 3d 744
    ; Nat. Auto & Cas. Co.
    v. Ind. Acc. 
    Com., supra
    , 
    34 Cal. 2d 20
    ; Viner v. 
    Untrecht, supra
    ,
    
    26 Cal. 2d 261
    ; Stromerson v. 
    Averill, supra
    , 
    22 Cal. 2d 808
    ;
    Simonton v. Los Angeles T. & S. 
    Bank, supra
    , 
    205 Cal. 252
    ;
    Treadwell v. 
    Nickel, supra
    , 
    194 Cal. 243
    ; and Steinberger v.
    
    Young, supra
    , 
    175 Cal. 81
    , to the extent each could be read as
    regarding the use of the clear and convincing standard of proof
    before the trial court as having no effect on appellate review for
    sufficiency of the evidence. (See Moss v. Superior Court (1998)
    25
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    
    17 Cal. 4th 396
    , 401; People v. Carbajal (1995) 
    10 Cal. 4th 1114
    ,
    1126.)7
    7
    Insofar as they are inconsistent with our holding, we also
    disapprove Ian J. v. Peter 
    M., supra
    , 
    213 Cal. App. 4th 189
    , In re
    Marriage of 
    Ruelas, supra
    , 
    154 Cal. App. 4th 339
    , In re Marriage
    of 
    Murray, supra
    , 
    101 Cal. App. 4th 581
    , and Patrick v. Maryland
    Casualty 
    Co., supra
    , 
    217 Cal. App. 3d 1566
    , as well as the Court
    of Appeal decisions that have described the clear and convincing
    standard as disappearing on appeal: Morgan v. 
    Davidson, supra
    ,
    
    29 Cal. App. 5th 540
    ; In re Alexzander 
    C., supra
    , 
    18 Cal. App. 5th 438
    ; Parisi v. 
    Mazzaferro, supra
    , 
    5 Cal. App. 5th 1219
    ; In re 
    Z.G., supra
    , 
    5 Cal. App. 5th 705
    ; In re 
    F.S., supra
    , 
    243 Cal. App. 4th 799
    ; In re 
    J.S., supra
    , 
    228 Cal. App. 4th 1483
    ; In re Marriage of
    E. & Stephen 
    P., supra
    , 
    213 Cal. App. 4th 983
    ; In re 
    A.S., supra
    ,
    
    202 Cal. App. 4th 237
    ; In re 
    K.A., supra
    , 
    201 Cal. App. 4th 905
    ; In
    re Levi 
    H., supra
    , 
    197 Cal. App. 4th 1279
    ; In re 
    E.B., supra
    ,
    
    184 Cal. App. 4th 568
    ; In re 
    I.W., supra
    , 
    180 Cal. App. 4th 1517
    ; In
    re Angelique 
    C., supra
    , 
    113 Cal. App. 4th 509
    ; In re 
    J.I., supra
    ,
    
    108 Cal. App. 4th 903
    ; In re Mark 
    L., supra
    , 
    94 Cal. App. 4th 573
    ;
    Sheila S. v. Superior 
    Court, supra
    , 
    84 Cal. App. 4th 872
    ; and
    Ensworth v. 
    Mullvain, supra
    , 
    224 Cal. App. 3d 1105
    .
    We also use this opportunity to comment upon another
    provision within the Witkin treatise’s discussion of appellate
    review of findings involving clear and convincing evidence.
    After observing that “the clear and convincing test disappears”
    on appeal, the treatise adds that “[o]n appeal, the usual rule of
    conflicting evidence is applied, giving full effect to the
    respondent’s evidence, however slight, and disregarding the
    appellant’s evidence, however strong.”           (9 Witkin, Cal.
    
    Procedure, supra
    , Appeal, § 371, p. 428.) It should be
    understood that even if conflicts in the evidence are viewed this
    way by a reviewing court, giving “full effect” to the respondent’s
    evidence, “however slight” (ibid.), does not necessarily mean
    that this evidence will amount to substantial evidence of
    “ponderable legal significance” (In re Teed’s 
    Estate, supra
    ,
    112 Cal.App.2d at p. 644) which reasonably could have been
    regarded as sufficient to establish a fact with the certainty
    required by the clear and convincing standard.
    26
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    Finally, respondents raise a narrower argument sounding
    in legislative intent. They assert that even if we were to
    conclude here that the clear and convincing standard of proof
    does not simply disappear when an appellate court reviews for
    substantial evidence, the Legislature thought this standard
    vanished on appeal when it enacted the limited conservatorship
    statute (Stats. 1990, ch. 79, § 14, p. 523; see also Stats. 1980,
    ch. 1304, § 6, p. 4400) and specified that the standard of proof
    for the appointment of a conservator is clear and convincing
    evidence (Stats. 1995, ch. 842, § 7, p. 6410). Respondents argue
    that we should defer to this expectation in interpreting the
    requirement of clear and convincing evidence found in Probate
    Code section 1801, subdivision (e).
    This argument is not persuasive. Respondents fail to
    identify anything within the text or legislative history of
    Probate Code section 1801 affirmatively establishing that the
    Legislature believed the clear and convincing standard of proof
    should be ignored by an appellate court reviewing a record for
    substantial evidence. Instead, respondents assert that when the
    Legislature recognized limited conservatorships and directed
    that the clear and convincing standard of proof applies to the
    appointment of a conservator, “it did so against the backdrop of
    150 years of consistent precedent from this Court squarely
    holding that such standards [of proof] direct only the trial court,
    and do not apply (‘disappear’) on appeal.” Thus, respondents
    claim, the Legislature should be regarded as having implicitly
    incorporated this judicially created rule within the statute. As
    we have explained, however, our precedent did not consistently
    articulate the view respondents ascribe to it. Therefore, even if
    we were to regard our case law as informing prevailing
    expectations among legislators, and these expectations as
    27
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    reflective of legislative intent, respondents’ argument would
    still falter at the outset. Given the mixed signals sent by our
    past decisions, we still could not reasonably conclude that when
    the Legislature provided for limited conservatorships and
    specified in section 1801, subdivision (e) that the appointment
    of a conservator requires clear and convincing evidence, it
    intended for appellate courts to completely disregard this
    standard of proof when reviewing the record developed before
    the probate court for substantial evidence.
    To summarize, we hold that an appellate court must
    account for the clear and convincing standard of proof when
    addressing a claim that the evidence does not support a finding
    made under this standard. When reviewing a finding that a fact
    has been proved by clear and convincing evidence, the question
    before the appellate court is whether the record as a whole
    contains substantial evidence from which a reasonable
    factfinder could have found it highly probable that the fact was
    true. In conducting its review, the court must view the record
    in the light most favorable to the prevailing party below and give
    appropriate deference to how the trier of fact may have
    evaluated the credibility of witnesses, resolved conflicts in the
    evidence, and drawn reasonable inferences from the evidence.
    Because the Court of Appeal below believed that the clear and
    convincing standard of proof “ ‘ “disappears” ’ ” on appeal
    (Conservatorship of 
    O.B., supra
    , 32 Cal.App.5th at p. 633), we
    remand the cause to that court for it to reevaluate the
    sufficiency of the evidence in light of the clarification we have
    provided.
    28
    CONSERVATORSHIP OF O.B.
    Opinion of the Court by Cantil-Sakauye, C. J.
    III. DISPOSITION
    We reverse the judgment of the Court of Appeal and
    remand the cause to that court for further proceedings
    consistent with this opinion.
    CANTIL-SAKAUYE, C. J.
    We Concur:
    CHIN, J.
    CORRIGAN, J.
    LIU, J.
    CUÉLLAR, J.
    KRUGER, J.
    GROBAN, J.
    29
    See next page for addresses and telephone numbers for counsel who argued in Supreme Court.
    Name of Opinion Conservatorship of O.B.
    __________________________________________________________________________________
    Unpublished Opinion
    Original Appeal
    Original Proceeding
    Review Granted XX 
    32 Cal. App. 5th 626
    Rehearing Granted
    __________________________________________________________________________________
    Opinion No. S254938
    Date Filed: July 27, 2020
    __________________________________________________________________________________
    Court: Superior
    County: Santa Barbara
    Judge: James Rigali
    __________________________________________________________________________________
    Counsel:
    Gerald J. Miller, under appointment by the Supreme Court, for Objector and Appellant.
    Greines, Martin, Stein & Richland, Robert A. Olson and Edward L. Xanders for Association of Southern
    California Defense Counsel as Amicus Curiae on behalf of Objector and Appellant.
    Keiter Appellate Law and Mitchell Keiter for Protecting Our Elders as Amicus Curiae on behalf of
    Objector and Appellant.
    Law Offices of Laura Hoffman King, Laura Hoffman King; Tardiff Law Offices, Neil S. Tardiff; and
    Shaun P. Martin for Petitioners and Respondents.
    Nelson & Fraenkel and Gretchen M. Nelson for Consumer Attorneys of California as Amicus Curiae on
    behalf of Petitioners and Respondents.
    Rita Himes for Legal Services for Prisoners with Children as Amicus Curiae.
    Horovitz & Levy, Curt Cutting, Jeremy B. Rosen; U.S. Chamber Litigation Center and Janet Galeria for
    Chamber of Commerce of the United States as Amicus Curiae.
    Thomas F. Coleman; Fitzgerald Yap Kredito and Brook J. Changala for Spectrum Institute, TASH, and
    Siblings Leadership Network as Amici Curiae.
    Counsel who argued in Supreme Court (not intended for publication with opinion):
    Gerald J. Miller
    P.O. Box 543
    Liberty Hill, TX 78642
    (512) 778-4161
    Shaun P. Martin
    5998 Alcala Park, Warren Hall
    San Diego, CA 92210
    (619) 260-2347