State v. Fernando V. ( 2019 )


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    STATE OF CONNECTICUT v. FERNANDO V.*
    (SC 19885)
    Robinson, C. J., and Palmer, D’Auria, Kahn and Ecker, Js.**
    Syllabus
    Convicted of the crimes of sexual assault in the second degree and risk of
    injury to a child in connection with his alleged sexual abuse of his
    stepdaughter, B, the defendant appealed to the Appellate Court, claiming,
    inter alia, that the trial court had abused its discretion by precluding
    him from presenting the testimony of B’s longtime boyfriend, P. The
    defendant sought to introduce P’s testimony to demonstrate that B had
    not exhibited certain behavioral characteristics that were consistent
    with those commonly exhibited by victims of sexual assault, which a
    psychologist called as an expert witness testified about during the state’s
    case-in-chief. The defendant also sought to introduce P’s testimony to
    contradict testimony by B’s mother about certain behavioral changes
    that she had observed in B in the year prior to the defendant’s arrest. The
    Appellate Court concluded that the trial court had abused its discretion
    in precluding P’s testimony, as that testimony was relevant to whether B
    had exhibited behavioral characteristics typical of sexual assault victims,
    which bore directly on the central issue of whether she had been sexually
    assaulted by the defendant. The Appellate Court also determined that
    the trial court’s error was not harmless because P’s testimony could
    have helped to show that B failed to exhibit behavior often attributed
    to sexual assault victims and, therefore, could have impacted the jury’s
    verdict. Accordingly, the Appellate Court reversed the trial court’s judg-
    ment and remanded the case for a new trial, and the state, on the
    granting of certification, appealed to this court. Held:
    1. This court declined to review the state’s claim, raised for the first time
    on appeal to this court, that P’s testimony about B’s behavior properly
    was excluded on the ground that it was cumulative of other evidence
    admitted at trial, as it was unpreserved, and, because the state aban-
    doned all other claims relating to the admissibility of P’s testimony and
    there were no exceptional circumstances warranting review of the state’s
    unpreserved claim, this court upheld the Appellate Court’s determination
    that the exclusion of P’s testimony was improper: the state did not claim
    in the trial court that P’s testimony should be excluded because it
    was cumulative or raise cumulativeness as an alternative ground for
    affirmance in the Appellate Court; moreover, because the issue of
    whether evidence is inadmissible on the ground that it is cumulative is
    a discretionary determination to be made by the trial court, and because
    the state never requested that the trial court rule on that issue, this
    court could not determine whether the trial court abused an exercise
    of discretion that it neither made nor was asked to make.
    2. The Appellate Court correctly determined that the improper exclusion
    of P’s testimony was not harmless, as P’s testimony was necessary for
    the jury to assess B’s credibility and could have had a substantial impact
    on the verdict: the state’s case against the defendant was not strong in
    light of the absence of corroborating physical evidence and any wit-
    nesses to the alleged sexual assaults, and, because B’s testimony was
    the only evidence of the defendant’s guilt, the case largely turned on
    whether the jury believed B, and the exclusion of P’s testimony deprived
    the defense of evidence that it could have used to cast doubt on B’s
    credibility; moreover, P’s testimony was not cumulative of other testi-
    mony adduced at trial because it would have presented the jury with
    new material not heard from any other witness regarding the indicia of
    sexual abuse identified by the state’s expert witness and would have
    conflicted directly with the testimony of B’s mother that B had become
    more withdrawn in the year prior to the defendant’s arrest; furthermore,
    contrary to the state’s claims, the defendant’s opportunity to cross-
    examine B and her mother did not render the error harmless, as the
    defendant was not constrained to present his defense solely through
    witnesses selected by the state, and the behavioral template to which
    the state’s expert witness referred during his testimony was not available
    to the defendant during his cross-examination of B and her mother
    because the expert witness testified after B and her mother testified.
    (Two justices dissenting in one opinion)
    Argued September 14, 2018—officially released March 26, 2019
    Procedural History
    Substitute information charging the defendant with
    two counts each of the crimes of sexual assault in the
    second degree and risk of injury to a child, brought to
    the Superior Court in the judicial district of Stamford-
    Norwalk, geographical area number twenty, and tried
    to the jury before Holden, J.; verdict and judgment
    of guilty, from which the defendant appealed to the
    Appellate Court, Keller, Prescott and Mullins, Js., which
    reversed the trial court’s judgment, and the state, on
    the granting of certification, appealed to this court.
    Affirmed.
    Denise B. Smoker, senior assistant state’s attorney,
    with whom, on the brief, were Richard J. Colangelo, Jr.,
    state’s attorney, and Nadia C. Prinz, former assistant
    state’s attorney, for the appellant (state).
    Mary A. Beattie, assigned counsel, for the appellee
    (defendant).
    Opinion
    ECKER, J. This is a certified criminal appeal from
    an Appellate Court decision reversing a judgment of
    conviction arising out of allegations by the complainant,
    B, that her stepfather, the defendant Fernando V., sexu-
    ally assaulted her repeatedly over a period of years
    while she was in middle school and high school. The
    Appellate Court reversed the judgment of conviction
    on the ground that the trial court improperly precluded
    the defendant from calling the complainant’s longtime
    boyfriend, P, as a witness regarding his observations
    of certain aspects of B’s behavior that the state’s expert
    witness had testified were common symptoms of child
    sexual assault. See State v. Fernando V., 
    170 Conn. App. 44
    , 68–69, 
    153 A.3d 701
     (2016). The Appellate Court
    concluded that the improper exclusion of P’s testimony
    was not harmless because the evidence may have
    helped ‘‘to show that B failed to exhibit behaviors often
    attributed to sexual assault victims,’’ which could have
    ‘‘dissuaded the jury from believing B’s story generally
    . . . .’’ 
    Id., 68
    . We affirm the judgment of the Appel-
    late Court.
    I
    The following facts are relevant to this appeal. B
    moved to Stamford from Mexico when she was nine
    years old to live with her mother, brother, and the
    defendant, her stepfather. The defendant adopted B in
    2004, when she was ten years old, and he later petitioned
    for her to obtain permanent residency in the United
    States. When B initially came to Stamford, the family
    lived with B’s grandmother and uncle, but eventually
    her grandmother moved back to Mexico. B testified
    that she was often alone with the defendant after her
    grandmother’s departure, and he began to act inappro-
    priately by touching her breasts. B told her mother
    about the defendant’s inappropriate behavior. B’s
    mother confronted the defendant, but he denied any
    wrongdoing and said B was confused.
    In 2006, when B was nearing her thirteenth birthday,
    the family moved to Norwalk. B testified that the defen-
    dant continued to touch her inappropriately after the
    move. According to B, she told her mother about the
    continuing sexual misconduct, but the defendant again
    denied the allegations when confronted. B testified that
    the abuse escalated when the defendant forced her
    to have sexual intercourse with him in the hallway
    bathroom one afternoon. She testified that the defen-
    dant thereafter continued to touch her inappropriately
    or to force her to have sexual intercourse on a regular
    basis, sometimes as often as once per week. B said that
    the abuse continued until approximately 2011, when
    she was sixteen or seventeen years old.
    B explained at trial that she did not disclose immedi-
    ately to her mother that the defendant was forcing her
    to have sex with him because she was scared of what
    her mother would think. She eventually disclosed the
    abuse to her mother in 2011, however, when her mother
    directly asked B whether the defendant had forced her
    to have sex. B and her mother then called the police,
    which resulted in the present criminal case.
    The defendant was charged with one count of sexual
    assault in the second degree in violation of General
    Statutes § 53a-71 (a) (1), one count of sexual assault
    in the second degree in violation of § 53a-71 (a) (4),
    and two counts of risk of injury to a child in violation
    of General Statutes § 53-21 (a) (2).1 The evidence against
    the defendant consisted primarily of the testimony of
    B and her mother, who testified as a constancy of accu-
    sation witness and also offered evidence of B’s behav-
    ior during the relevant time period. Both B and her
    mother testified that B achieved good grades, partici-
    pated in extracurricular activities, maintained employ-
    ment without excessive absences, and continued to
    enjoy reading books and pursuing musical interests.
    B’s mother also testified that she did not notice any
    personality changes in B when she was twelve or thir-
    teen years old, but she did observe that B’s disposition
    changed in the year before the defendant’s arrest. ‘‘[S]he
    was more withdrawn, and I saw that she would stay in
    her room,’’ ‘‘locked up,’’ explained B’s mother.
    Toward the end of its case-in-chief, after B and her
    mother had testified, the state called an expert witness,
    Larry M. Rosenberg, a licensed psychologist and the
    clinical director of the Child Guidance Center of South-
    ern Connecticut. Rosenberg testified about ‘‘delayed
    disclosure,’’ which describes a commonly observed
    phenomenon in sexual abuse cases that occurs when
    a victim does not inform anyone of the sexual abuse
    for a period of time, sometimes lengthy, despite the
    suffering and trauma experienced as a result of being
    abused.
    The origin of the present appeal can be traced to
    the point in Rosenberg’s testimony when he was asked
    by the state to opine about behavioral issues other than
    delayed disclosure. More specifically, Rosenberg was
    asked by the state about symptoms exhibited by vic-
    tims of child sexual assault who have made a disclo-
    sure. Rosenberg answered that there were a variety of
    symptoms commonly observed in such victims, includ-
    ing changes in behavior, disassociation, withdrawal,
    depression, heightened anxiety, bad dreams, flashbacks,
    sleep interruption, and changes in cognitive functioning.
    Rosenberg elaborated the point on cross-examination,
    explaining that depression can manifest itself in changes
    in mood, irritability, and angry outbursts. He stated,
    ‘‘[t]he list goes on, you know, bad dreams, all sorts of
    things.’’2 Rosenberg’s expert testimony apparently was
    offered by the state to help the jury understand the sig-
    nificance of the prior testimony of B and her mother, in
    a manner consistent with the state’s objective at trial,
    which was to establish the defendant’s guilt. The expert
    testimony about delayed disclosure would help to
    explain why B did not immediately report the most
    severe abuse to her mother; the testimony about com-
    mon symptoms of trauma would assist the jury in under-
    standing why B had become more withdrawn prior to
    the defendant’s arrest.
    After the conclusion of the state’s case-in-chief, the
    defense attempted to discredit the state’s version of
    events by presenting the testimony of P, B’s longtime
    boyfriend. Upon hearing that B and P were in a relation-
    ship, the trial court excused the jury to hear the state’s
    objection that P’s testimony was not relevant to the issue
    at hand. With the jury out of the courtroom, the defense
    made the following offer of proof relating to the admissi-
    bility of P’s testimony about B’s behavior:
    ‘‘[Defense Counsel]: When you say you’re in a relation-
    ship, are you—do you consider yourself boyfriend and
    girlfriend?
    ‘‘[P]: Yes.
    ‘‘[Defense Counsel]: And have you continuously gone
    out with her, or been in a relationship with her, as boy-
    friend and girlfriend, for four years?
    ‘‘[P]: Yes, I have.
    ‘‘[Defense Counsel]: Have there been any breaks in
    the relationship?
    ‘‘[P]: No, there have not.
    ‘‘[Defense Counsel]: Now, in the time period that
    you’ve been going out, as boyfriend and girlfriend, with
    [B], have you noticed any significant behavioral issues
    with her?
    ‘‘[P]: No, not really.
    ‘‘[Defense Counsel]: Have you noticed any pro-
    nounced eating disorders?
    ‘‘[P]: No, I have not.
    ‘‘[Defense Counsel]: Have you noticed any suicidal
    thoughts?
    ‘‘[P]: No, I have not.
    ‘‘[Defense Counsel]: Have you noticed any severe
    depression?
    ‘‘[P]: No, I have not.
    ‘‘[Defense Counsel]: Have you noticed any eating dis-
    orders?
    ‘‘[P]: No, I have not.
    ‘‘[Defense Counsel]: Have you noticed any anger or
    outbursts or violence, by her?
    ‘‘[P]: No, I have not.
    ‘‘[Defense Counsel]: Have you noticed any trouble
    with her focusing on issues or tasks at hand?
    ‘‘[P]: No, I have not.
    ‘‘[Defense Counsel]: And, to your knowledge, do you
    know if her grades have slipped, in any way, in the four
    years you’ve known her?
    ‘‘[P]: No, I don’t think so.
    ‘‘[Defense Counsel]: And, in the four years that you’ve
    known her, have you noticed any type of interruption in
    her playing of the flute?
    ‘‘[P]: No, I have not.
    ‘‘[Defense Counsel]: And, since September, 2011, have
    you noticed any of the things that I just mentioned,
    occurring with [B]?
    ‘‘[P]: No, I have not.’’
    The defense argued that P’s testimony regarding B’s
    behavior was admissible because it was relevant in two
    ways: first, to impeach the credibility of B’s mother, who
    had testified that B had become more withdrawn, and,
    second, as direct evidence regarding the occurrence or
    nonoccurrence of the behavioral changes that the state’s
    expert witness had testified are commonly exhibited by
    child victims of sexual assault. The latter ground in par-
    ticular was twice referenced by defense counsel in collo-
    quy with the trial court. The state, for its part, argued
    categorically that the testimony was not relevant and
    pointed out that P was not qualified to offer testimony
    on the subject because he was not an expert witness.
    The state also argued that the evidence did not directly
    impeach the testimony of B or her mother. In addition,
    the state noted its concern that it could be prejudicial for
    the jury to hear testimony about B’s romantic relation-
    ship with P.
    The trial court ruled that P’s testimony was inadmissi-
    ble in its entirety. The court stated that ‘‘[t]he relevance
    of this testimony . . . is collateral, at best.’’ With
    respect to impeachment, it found that ‘‘[i]mpeachment
    is not, by this evidence, extrinsic evidence. It lends itself
    to—it’s likely to confuse the jurors. It’s not probative
    of any issues. . . . I don’t see any impeachment, based
    upon what I’ve heard on this record . . . . [An] [o]ffer
    of proof has been made. It’s on the record, should the
    matter be reviewed. It’s there for the Appellate Court
    to look at. But before the jury, it’s confusing. It’s not
    probative, and . . . the objection is sustained.’’ There-
    fore, P’s testimony was not presented to the jury.
    The jury returned a verdict of guilty on two counts
    of sexual assault in the second degree and two counts
    of risk of injury to a child. The trial court sentenced
    the defendant to an effective term of ten years of incar-
    ceration and ten years of special parole. The defendant
    appealed from the judgment of conviction on the ground
    that the trial court improperly excluded P’s testimony
    from the jury’s consideration.3 State v. Fernando V.,
    supra, 
    170 Conn. App. 46
    . In the Appellate Court, the
    state argued that the trial court properly excluded P’s
    testimony ‘‘because it was both collateral in nature and
    entirely consistent with the testimony given by B and
    her mother.’’ 
    Id.,
     48–49. The state also contended that,
    even if it was error to exclude the evidence, the error
    was harmless because P’s testimony ‘‘did not differ
    materially’’ from the testimony of B or her mother and
    therefore the exclusion ‘‘had little effect on the jury
    . . . .’’ (Internal quotation marks omitted.) 
    Id., 69
    . The
    Appellate Court rejected those claims, holding that P’s
    testimony improperly was excluded because it was rele-
    vant to ‘‘the issue of whether B had exhibited behaviors
    associated with some sexual assault victims, which had
    a clear and direct bearing on the central issue before
    the jury, namely, whether B had been sexually assaulted
    by the defendant.’’ 
    Id., 67
    . The Appellate Court further
    concluded that the improper exclusion of P’s testimony
    was not harmless because the absence of any physical
    evidence or witnesses to the sexual assaults meant that
    ‘‘[t]he case turned largely on whether the jury believed
    B’’; 
    id., 69
    ; and P’s testimony, which ‘‘helped to paint B
    as having been an ordinary high school girl,’’ necessarily
    would have ‘‘decrease[d] the likelihood in the eyes of
    the jury that an assault had occurred.’’ 
    Id., 68
    . The
    Appellate Court consequently reversed the judgment of
    conviction and remanded for a new trial. 
    Id., 69
    . This
    certified appeal followed.
    II
    The state first argues that the Appellate Court improp-
    erly found that the trial court had abused its discretion
    by excluding P’s testimony. The state does not rely on
    the grounds it raised in the trial court or the Appellate
    Court but instead contends, for the first time, that P’s
    testimony regarding B’s behavior properly was
    excluded by the trial court because it was cumulative
    of other evidence in the record indicating that B ‘‘was
    basically ‘an ordinary high school girl’ . . . dating, get-
    ting good grades, participating in extracurricular activi-
    ties and holding down a job.’’ (Citation omitted.) This
    is a new argument. The state never argued in the trial
    court that P’s testimony about B’s behavior should be
    excluded because it was cumulative, nor did the trial
    court base its ruling on that ground. The argument also
    was not raised or briefed by the state as an alternative
    ground for affirmance in the Appellate Court, and the
    Appellate Court, like the trial court, did not address the
    argument as part of its admissibility analysis. On this
    record, we conclude that the state has failed to preserve
    its belated legal theory of the inadmissibility of P’s
    behavioral testimony based on cumulativeness, made
    for the first time in this court, and we decline to review
    the claim. Because the state has abandoned all claims
    other than its contention that P’s testimony was cumula-
    tive; see, e.g., Samelko v. Kingstone Ins. Co., 
    329 Conn. 249
    , 255 n.3, 
    184 A.3d 741
     (2018) (deeming arguments
    not raised and briefed in this court to be abandoned);
    the decision of the Appellate Court that the exclusion
    of P’s testimony was improper effectively stands
    unchallenged and must be upheld.
    ‘‘This court is not bound to consider claims of law
    not made at the trial. . . . In order to preserve an evi-
    dentiary ruling for review, trial counsel must object
    properly. . . . In objecting to evidence, counsel must
    properly articulate the basis of the objection so as to
    apprise the trial court of the precise nature of the objec-
    tion and its real purpose, in order to form an adequate
    basis for a reviewable ruling. . . . Once counsel states
    the authority and ground of [the] objection, any appeal
    will be limited to the ground asserted.’’ (Internal quota-
    tion marks omitted.) State v. Gonzalez, 
    272 Conn. 515
    ,
    539, 
    864 A.2d 847
     (2005); see also Perez-Dickson v.
    Bridgeport, 
    304 Conn. 483
    , 499, 
    43 A.3d 69
     (2012) (rule
    that claim must be ‘‘raised and decided in the trial court
    . . . applies equally to alternate grounds for
    affirmance’’ [internal quotation marks omitted]). We
    have emphasized that ‘‘[t]hese requirements are not
    simply formalities. They serve to alert the trial court
    to potential error while there is still time for the court
    to act. . . . Assigning error to a court’s evidentiary rul-
    ings on the basis of objections never raised at trial
    unfairly subjects the court and the opposing party to
    trial by ambush.’’ (Internal quotation marks omitted.)
    
    Id., 540
    ; see also State v. Miranda, 
    327 Conn. 451
    , 465,
    
    174 A.3d 770
     (2018) (‘‘[A] party cannot present a case
    to the trial court on one theory and then seek appellate
    relief on a different one . . . . For this court to . . .
    consider [a] claim on the basis of a specific legal ground
    not raised during trial would amount to trial by ambus-
    cade, unfair both to the [court] and to the opposing
    party.’’ [Internal quotation marks omitted.]).
    This reasoning applies with full force in the present
    case, in which the state’s newly minted ground for
    exclusion, based on the supposedly cumulative nature
    of the excluded evidence, calls for a discretionary deter-
    mination to be made by the trial court in the first
    instance. See, e.g., Motzer v. Haberli, 
    300 Conn. 733
    ,
    742, 
    15 A.3d 1084
     (2011) (‘‘We conclude that the trial
    court did not abuse its discretion in excluding the prof-
    fered evidence [as cumulative]. Our rules of evidence
    vest trial courts with discretion to exclude relevant
    evidence when ‘its probative value is outweighed . . .
    by considerations of undue delay, waste of time or
    needless presentation of cumulative evidence.’ ’’), quot-
    ing Conn. Code Evid. § 4-3. This particular exercise of
    discretion was not undertaken by the trial court in this
    case because the state never requested a ruling on the
    ground now being advanced. We cannot determine
    whether the trial court abused an exercise of discretion
    that it neither made nor was asked to make. Under
    these circumstances, we decline to review the state’s
    unpreserved claim.4
    Our rules of reviewability in the evidentiary context
    are prudential in nature, not jurisdictional, but they
    serve essential purposes and promote vital principles,
    and only in the most compelling situation will we depart
    from them. Legal claims, arguments and objections
    regarding evidentiary matters ordinarily must be made
    at the right time and place, because that time and place
    is when the opposing party has the opportunity to
    respond to the point or to cure the defect, and it also
    is when the trial judge will be required to adjudicate
    the disputed issue within the particularized context
    defined by the circumstances then existing. Adhering
    to the requirement of specificity and contemporaneity
    promotes fairness between the parties and helps to
    ensure that trial and appellate judges remain optimally
    positioned to perform their respective roles. There are,
    of course, exceptional circumstances when this court
    will ‘‘consider a claim, constitutional or otherwise, that
    has not been raised and decided in the trial court.’’5
    Perez-Dickson v. Bridgeport, 
    supra,
     
    304 Conn. 499
    .
    Nothing about the present case qualifies the state’s
    unpreserved evidentiary claim for such exceptional
    treatment.
    The Appellate Court determined that P’s testimony
    improperly was excluded because it was relevant and
    ‘‘probative of the central issue of this case’’—B’s credi-
    bility. State v. Fernando V., supra, 
    170 Conn. App. 64
    .
    In this court, the state does not challenge the Appellate
    Court’s evidentiary holding on any basis other than the
    unpreserved claim of cumulativeness. Accordingly, the
    determination of the Appellate Court that P’s testimony
    improperly was excluded must stand.
    III
    We now must decide whether the improper exclusion
    of P’s testimony was harmless. The state makes two
    arguments: first, that the excluded evidence was cumu-
    lative, and, second, that the case against the defendant
    was very strong and any inconsistencies in B’s testi-
    mony were explored on cross-examination and consid-
    ered by the jury. We disagree with both contentions.
    We view the record as the Appellate Court did and
    concur in its conclusion that the exclusion of P’s testi-
    mony cannot be considered harmless on this record.
    The law governing harmless error for nonconstitu-
    tional evidentiary claims is well settled. ‘‘When an
    improper evidentiary ruling is not constitutional in
    nature, the defendant bears the burden of demonstra-
    ting that the error was harmful. . . . [W]hether [an
    improper ruling] is harmless in a particular case
    depends upon a number of factors, such as the impor-
    tance of the witness’ testimony in the [defendant’s] case,
    whether the testimony was cumulative, the presence
    or absence of evidence corroborating or contradicting
    the testimony of the witness on material points, the
    extent of cross-examination otherwise permitted, and,
    of course, the overall strength of the prosecution’s case.
    . . . Most importantly, we must examine the impact of
    the . . . evidence on the trier of fact and the result of
    the trial. . . . [T]he proper standard for determining
    whether an erroneous evidentiary ruling is harmless
    should be whether the jury’s verdict was substantially
    swayed by the error. . . . Accordingly, a nonconstitu-
    tional error is harmless when an appellate court has a
    fair assurance that the error did not substantially affect
    the verdict.’’ (Internal quotation marks omitted.) State
    v. Favoccia, 
    306 Conn. 770
    , 808–809, 
    51 A.3d 1002
    (2012); accord State v. Jordan, 
    329 Conn. 272
    , 287–88,
    
    186 A.3d 1
     (2018); State v. Shaw, 
    312 Conn. 85
    , 102,
    
    90 A.3d 936
     (2014). We have observed that cases that
    present the jury with a ‘‘credibility contest character-
    ized by equivocal evidence . . . [are] far more prone
    to harmful error.’’ (Internal quotation marks omitted.)
    State v. Favoccia, supra, 816–17.
    The state seriously underestimates the potential
    impact of the excluded testimony. As the Appellate
    Court aptly pointed out, ‘‘the state’s case here was not
    an exceedingly strong one’’ in light of the absence of
    ‘‘corroborating physical evidence or any witnesses to
    the alleged sexual assaults.’’6 State v. Fernando V.,
    supra, 
    170 Conn. App. 68
    –69; see also State v. Favoccia,
    supra, 
    306 Conn. 809
     (describing child sexual assault
    cases that lack physical evidence and turn ‘‘entirely on
    the credibility of the complainant’’ as ‘‘not particularly
    strong’’ [internal quotation marks omitted]); State v.
    Grenier, 
    257 Conn. 797
    , 808, 
    778 A.2d 159
     (2001) (noting
    that ‘‘the state’s case was not particularly strong’’
    because child victim’s ‘‘version of the events provided
    the only evidence of the defendant’s guilt’’); State v.
    Alexander, 
    254 Conn. 290
    , 308, 
    755 A.2d 868
     (2000)
    (noting that ‘‘the state’s case was not particularly strong
    in that it rested on the credibility of the [child] victim’’
    [internal quotation marks omitted]). B’s testimony was
    the only evidence of the defendant’s guilt, and, there-
    fore, this ‘‘case turned largely on whether the jury
    believed B.’’ State v. Fernando V., supra, 
    170 Conn. App. 69
    . Indeed, as the state explained to the jury in
    closing argument, ‘‘[w]hat this case really comes down
    to is one simple question, who do you believe?’’ By
    excluding P’s testimony, the trial court deprived the
    defense of evidence that it could have used to cast
    doubt on the credibility of B’s allegations. See State v.
    Ritrovato, 
    280 Conn. 36
    , 57–58, 
    905 A.2d 1079
     (2006)
    (holding that improper exclusion of evidence pertinent
    to minor victim’s credibility ‘‘would have cast sufficient
    doubt on [her] credibility [so as] to have influenced the
    jury’s verdict on the sexual assault charges’’).
    To understand more particularly the nature of the
    potential harm caused by the exclusion of P’s testimony,
    it is important to examine how that testimony became
    relevant to the state’s case at trial. Evidently concerned
    that a lay jury might draw unwarranted adverse infer-
    ences about B’s credibility from the fact that B had
    delayed telling her mother about being sexually
    assaulted, the state chose to present expert testimony
    at trial from Rosenberg explaining that delayed
    reporting is common in child sexual abuse cases and
    describing the psychological and emotional factors that
    make such a delay understandable. See State v. Favoc-
    cia, supra, 
    306 Conn. 817
     (Palmer, J., dissenting)
    (explaining that state may use expert testimony in child
    sexual abuse cases to explain victim behavior that is
    common but may not be known to laypersons). But
    Rosenberg’s testimony did not stop at explaining
    delayed disclosure. The state also questioned Rosen-
    berg at length about postdisclosure behavioral charac-
    teristics (‘‘symptoms of trauma’’) commonly observed
    in teenagers and young adults who have been sexually
    assaulted. Rosenberg initially responded in general
    terms, stating that ‘‘being sexually abused tends to
    most—most typically, but not always, reduce the level
    of functioning of the person who has been victimized.’’
    The state asked for greater detail: ‘‘What are some symp-
    toms of trauma from child sexual assault, that you’ve
    seen, in your practice, with victims who have made a
    disclosure?’’ Rosenberg answered by providing exam-
    ples, including ‘‘disassociation, the kind of psychic
    numbing that can go on. . . . But in addition to that,
    typically, symptoms would be bad dreams, flashbacks
    of the events that had occurred . . . changes in func-
    tioning with regard to sleep, with regard to cognitive
    functioning, with regard to school functioning. [With-
    drawal] is common. Depression is common. Heightened
    anxiety, particularly in the face of anything that is remi-
    niscent of the event. . . . And those are some of the
    findings, typically.’’ During cross-examination, Rosen-
    berg highlighted depression as a particularly common
    symptom and explained that depression can manifest
    itself in a variety of ways, including, for example,
    ‘‘changes in mood and irritability and angry outbursts,’’
    as well as becoming ‘‘more withdrawn.’’ As he con-
    cluded his answer about the most common behavioral
    symptoms, Rosenberg made it clear that his description
    was not exhaustive, stating that ‘‘[t]he list goes on.’’
    Rosenberg’s testimony became the lens through
    which the jury reasonably could have viewed the most
    critical issues in the case. The state presumably elicited
    his testimony about ‘‘behavioral symptoms’’ because it
    wanted to lend significance to B’s mother’s testimony
    that B had become more withdrawn than usual in the
    year prior to the defendant’s arrest. In fact, the state
    argued this very inference in its closing argument to
    the jury when it suggested that B’s withdrawal was a
    sign that she had been sexually abused.7 Rosenberg’s
    testimony was double-edged, however, because it pro-
    vided the defense with an evidentiary basis to develop
    a jury argument that B’s allegations of abuse should
    not be believed. The defense sought to raise the specter
    of reasonable doubt by arguing that B had not exhibited
    any of the many behavioral symptoms of trauma that
    the state’s own expert said were typical and common
    among sexual abuse victims. Rosenberg’s testimony, in
    other words, provided the defense with an opening to
    argue that the absence of such symptoms equates to
    an absence of abuse. The potential significance of P’s
    testimony must be seen in this light.
    With this framework in place, it becomes evident
    why the improper exclusion of P’s testimony was not
    harmless. First, and most significantly, P’s testimony
    was not cumulative because it would have presented
    the jury with new material, not heard from any other
    witness, regarding certain indicia of sexual abuse identi-
    fied by Rosenberg. See State v. Favoccia, supra, 
    306 Conn. 808
    –809 (holding that cumulativeness is factor
    to be considered in harmless error analysis). No other
    witness had been asked whether B suffered from
    depression, anger or outbursts of violence, or if she
    had trouble focusing on issues or tasks at hand. These
    particular symptoms were among those identified by
    Rosenberg as common behavioral manifestations of
    trauma caused by sexual abuse. The evidentiary ruling
    under review excluded P’s testimony that he did not
    observe B showing any of these specific symptoms of
    abuse during the past four years—evidence provided
    by no other witness. This testimony, if allowed, would
    have supplied defense counsel with additional grounds
    to argue that the abuse had never happened. New evi-
    dence is not cumulative evidence.
    Second, the jury reasonably could have found that
    one significant aspect of the new information contained
    in P’s testimony actually conflicted with the testimony
    of B’s mother and thus could not have been duplicative
    of that testimony. B’s mother testified that B had
    become more withdrawn prior to the defendant’s arrest,
    which was made highly relevant by Rosenberg’s subse-
    quent testimony that ‘‘[d]epression can manifest itself
    in a variety of ways,’’ including a victim’s becoming
    ‘‘more withdrawn.’’ A juror reasonably could have
    understood P’s testimony that B did not exhibit any
    signs of depression as being inconsistent with the testi-
    mony of B’s mother regarding B’s withdrawal. See
    United States v. Stewart, 
    907 F.3d 677
    , 688 (2d Cir.
    2018) (‘‘[T]he fact of the inconsistency gives the jury
    an insight into the [witness’] state of mind; the inconsis-
    tency shows that the witness is either uncertain or
    untruthful. In either event, the inconsistency calls into
    question the [witness’] believability.’’ [Internal quota-
    tion marks omitted.]), quoting 1 K. Broun, McCormick
    on Evidence (7th Ed. 2013) § 34, p. 209. The trial court’s
    ruling prevented the defense from using P’s testimony
    to challenge the mother’s testimony that B had become
    withdrawn, which, not insignificantly, was the only
    behavioral symptom of trauma allegedly exhibited by B.
    The Appellate Court summarized the unfairness: ‘‘The
    state cannot have it both ways: on the one hand, intro-
    ducing its own evidence of B’s behavior favorable to
    the state’s case and, on the other, seeking to prevent
    the defendant from presenting his own contrary evi-
    dence. B’s mother provided otherwise unrebutted testi-
    mony that B was more withdrawn than usual and stayed
    locked up in her room. The state then elicited testimony
    from Rosenberg that withdrawal was common among
    sexual assault victims, thereby giving damning context
    to the mother’s observation. The defendant was entitled
    to produce his own witness in an effort to counter
    the state’s evidence and demonstrate that B had not
    exhibited any behavioral characteristics that could be
    associated with sexual assault victims. That witness
    was P.’’ State v. Fernando V., supra, 
    170 Conn. App. 64
    –65. We believe that a reasonable juror may have
    been swayed by P’s testimony when assessing whether
    to believe the allegations of abuse.
    Further compounding the harm arising from the
    improper exclusion of P’s testimony is the fact that the
    state affirmatively used B’s mother’s testimony about
    B’s ‘‘withdrawal’’ and Rosenberg’s testimony about
    behavioral symptoms of trauma in its arguments to the
    jury. In its closing argument, the state attempted to
    focus the jury’s attention on one aspect of B’s behavior
    to support B’s allegation that she had been sexually
    assaulted by reminding the jury that B’s mother had
    ‘‘testified that even she noticed [B] was acting more
    withdrawn, spending more time alone in her room.’’ In
    rebuttal closing argument, the state again pointed out
    that ‘‘there was testimony that showed that [B] became
    more withdrawn before the arrest, that she spent more
    time to herself. [B] herself testified that after the arrest,
    she felt relief, that she could go home and not worry.
    . . . Rosenberg testified that symptoms from a trau-
    matic experience, such as child sexual assault, can
    sometimes occur many years later.’’ In our view, ‘‘[s]uch
    heavy reliance [on the withdrawal-related testimony]
    . . . expose[s] its central role in persuading the jury
    to convict, as the government clearly understood that
    [the] statement was a powerful weapon in its arsenal.’’
    (Internal quotation marks omitted.) United States v.
    Stewart, supra, 
    907 F.3d 689
    .
    After seeking to persuade the jury to infer guilt based
    on the mother’s testimony about one of the behavioral
    symptoms identified by Rosenberg, the state cannot
    fairly argue that it was harmless to exclude P’s conflict-
    ing testimony that he saw no significant behavioral
    changes or depression in B. To the contrary, the exclu-
    sion of P’s testimony deprived the defense of the ability,
    in its own summation to the jury, to undercut the state’s
    argument by reminding the jury that P, who was among
    B’s closest friends for the four years leading up to trial,
    had observed none of the many symptoms of sexual
    abuse that Rosenberg had identified. Cf. State v. Saw-
    yer, 
    279 Conn. 331
    , 360–61, 
    904 A.2d 101
     (2006) (finding
    harm, in relevant part, because state repeatedly empha-
    sized improperly admitted evidence in its closing argu-
    ment), overruled in part on other grounds by State v.
    DeJesus, 
    288 Conn. 418
    , 454–55 n.23, 
    953 A.2d 45
     (2008);
    State v. Alexander, supra, 
    254 Conn. 308
     (holding that
    prosecutor’s improper remarks in closing argument
    were not harmless because they ‘‘directly addressed
    the critical issue in this case, the credibility of the victim
    and the defendant’’ [internal quotation marks omitted]).
    Lastly, the state argues, and the dissent agrees, that
    the defendant’s ability to cross-examine B and her
    mother renders the error harmless. This argument
    ignores two important points. First, Rosenberg testified
    after B and her mother, and, therefore, the behavioral
    template provided by him was not available to the
    defense during the cross-examination of those key wit-
    nesses. More broadly, and perhaps more importantly,
    a criminal defendant is not constrained to present his
    defense through witnesses selected by the state. ‘‘If the
    accused [is] guilty, he should [nonetheless] be con-
    victed only after a fair trial’’; (internal quotation marks
    omitted) State v. Andrews, 
    313 Conn. 266
    , 294, 
    96 A.3d 1199
     (2014); which includes, among other things, an
    opportunity ‘‘to present [his] version of the facts as well
    as the prosecution’s to the jury so it may decide where
    the truth lies.’’ Washington v. Texas, 
    388 U.S. 14
    , 19,
    
    87 S. Ct. 1920
    , 
    18 L. Ed. 2d 1019
     (1967). This does not
    mean that there are no limits on the defendant’s right
    to present his defense as he wishes; see State v. Wright,
    
    320 Conn. 781
    , 818–19, 
    135 A.3d 1
     (2016); but, because
    P’s testimony was admissible and could have made a
    substantial impact on the jury, the improper exclusion
    of this testimony cannot be deemed harmless. ‘‘[T]he
    truth is more likely to be arrived at by hearing the
    testimony of all persons of competent understanding
    who may seem to have knowledge of the facts involved
    in a case, leaving the credit and weight of such testi-
    mony to be determined by the jury or by the court
    . . . .’’ (Internal quotation marks omitted.) Washington
    v. Texas, 
    supra, 22
    . Just as ‘‘the prosecution is entitled
    to prove its case by evidence of its own choice,’’ so,
    too, does the defendant deserve the same opportunity
    to defend himself.8 Old Chief v. United States, 
    519 U.S. 172
    , 186, 
    117 S. Ct. 644
    , 
    136 L. Ed. 2d 574
     (1997).
    It cannot be harmless error to ‘‘remove from the fact
    finder the very tools by which to make a credibility
    determination . . . .’’ State v. Little, 
    138 Conn. App. 106
    , 123, 
    50 A.3d 360
    , cert. denied, 
    307 Conn. 935
    , 
    56 A.3d 713
     (2012); see also Devincentz v. State, 
    460 Md. 518
    , 562, 
    191 A.3d 373
     (2018) (finding that complete
    exclusion of witness’ testimony was not harmless error
    when ‘‘[t]he outcome of [the] case turned entirely on the
    relative credibility of the defendant and the accuser,’’
    because the exclusion ‘‘limited the jury’s ability to
    assess [the accuser’s] credibility . . . .’’). ‘‘[W]here
    credibility is an issue and, thus, the jury’s assessment
    of who is telling the truth is critical, an error affecting
    the jury’s ability to assess a [witness’] credibility is
    not harmless error.’’ Devincentz v. State, supra, 561.
    Because P’s testimony was necessary for the jury to
    assess B’s credibility, we conclude that the exclusion
    of his testimony was not harmless.
    The judgment of the Appellate Court is affirmed.
    In this opinion PALMER and D’AURIA, Js., concurred.
    * In accordance with our policy of protecting the privacy interests of the
    victims of sexual assault and the crime of risk of injury to a child, we decline
    to use the defendant’s full name or to identify the complainant or others
    through whom the complainant’s identity may be ascertained. See General
    Statutes § 54-86e.
    ** This case originally was scheduled to be argued before a panel of this
    court consisting of Chief Justice Robinson and Justices Palmer, D’Auria,
    Kahn and Ecker. Although Justice Palmer was not present when the case
    was argued before the court, he has read the briefs and appendices, and
    listened to a recording of the oral argument prior to participating in this
    decision.
    1
    Although §§ 53-21 (a) and 53a-71 (a) have been the subject of amend-
    ments since 2006; see, e.g., Public Acts 2007, No. 07-143, §§ 1 and 4 (amending
    §§ 53a-71 [a] and 53-21 [a], respectively); the year in which the conduct that
    formed the basis of the charges in the present case began, those amendments
    have no bearing on the merits of this appeal. In the interest of simplicity,
    we refer to the current revision of §§ 53-21 (a) (2) and 53a-71 (a) (1) and (4).
    2
    Rosenberg testified that these various symptoms ‘‘don’t necessarily
    appear in everyone and that . . . even when they do appear, [they appear]
    in different kinds of ways.’’ He also said that it was ‘‘more common than
    not’’ that an abuse victim between the ages of twelve and eighteen would
    exhibit ‘‘some sort of behavioral difficulties,’’ and he identified depression
    as among the more common of the ‘‘behavioral characteristics’’ observed
    in those victims.
    3
    The defendant also raised an additional evidentiary claim in the Appellate
    Court relating to the trial court’s exclusion of a different portion of P’s
    testimony, which the defense had offered at trial for the purpose of
    impeaching B and her mother’s earlier testimony that the ‘‘defendant had
    tried to prevent the complainant from associating with boys of her own
    age.’’ State v. Fernando V., supra, 
    170 Conn. App. 46
    . This particular claim
    was not relied on by the Appellate Court as a basis for reversing the judgment
    of conviction and is not within the scope of the question certified for review
    by this court, which is limited to whether the Appellate Court improperly
    determined ‘‘that the trial court [had] abused its discretion in excluding the
    testimony of the victim’s boyfriend on the issue of whether she had exhibited
    behaviors associated with some sexual assault victims’’ and whether the
    improper exclusion of P’s testimony was harmful. State v. Fernando V., 
    324 Conn. 923
    , 
    155 A.3d 753
     (2017). Although the defendant raised the issue
    regarding his treatment of B’s male acquaintances, among other issues, as
    an alternative ground on which to affirm the judgment of the Appellate Court,
    we decline to address it in light of our disposition of the certified question.
    4
    The dissent suggests that this conclusion is in ‘‘apparent conflict’’ with
    a line of cases holding that this court may rely on any grounds supported
    by the record to affirm the judgment of a trial court, including alternative
    evidentiary grounds raised for the first time on appeal. We perceive no such
    conflict, however, for precisely the reason identified by the dissent when
    it observes that one of the keys to resolving this issue is ‘‘whether the
    alternative ground is one [on which] the trial court would have been forced
    to rule in favor of the [party prevailing at trial].’’ (Emphasis added; internal
    quotation marks omitted.) Footnote 2 of the dissenting opinion, quoting
    State v. Cameron M., 
    307 Conn. 504
    , 526–27, 
    55 A.3d 272
     (2012) (overruled
    in part on other grounds by State v. Elson, 
    311 Conn. 726
    , 748 n.14, 
    91 A.3d 862
     [2014]), cert. denied, 
    569 U.S. 1005
    , 
    133 S. Ct. 2744
    , 
    186 L. Ed. 2d 194
    (2013). When a trial court that has excluded (or admitted) evidence for the
    wrong reason nonetheless would have been required to make the same
    evidentiary ruling on the unpreserved alternative ground as a matter of
    law, there is no reason that a reviewing court should be prevented from
    substituting the legally compelled ground for the legally flawed ground.
    The present case is altogether different, however, because it involves an
    unpreserved alternative ground (cumulativeness) that ordinarily is discre-
    tionary in nature; the state has not, and could not, argue that the trial court
    here ‘‘would have been forced to rule’’ in its favor on this ground. See part
    III of this opinion.
    5
    The state, as the appellant here, was not required to file notice in this
    court that it intended to raise an alternative ground for affirmance pursuant
    to Practice Book § 84-11, because that provision applies only to an appellee
    who wishes to raise an alternative ground to affirm the judgment of the
    Appellate Court in a certified appeal. See Vine v. Zoning Board of Appeals,
    
    281 Conn. 553
    , 568 n.11, 
    916 A.2d 5
     (2007). Rather, the state’s procedural
    default arises from its failure at trial to preserve the legal issue for appellate
    review. As Vine instructs, in cases in which Practice Book § 84-11 is inappli-
    cable, ‘‘because the [appellant is] raising an [alternative] ground to affirm
    the judgment of the trial court, the principles governing preservation of
    claims raising [alternative] grounds for affirmance apply . . . .’’ Id.
    6
    The state contends that there was not a complete absence of corroborat-
    ing evidence of the alleged sexual assaults, because B’s brother ‘‘testified
    that he saw B in the defendant’s bedroom, putting on her belt.’’ We disagree
    with the state’s characterization of the strength of the brother’s testimony
    for two reasons. First, B’s brother did not witness any inappropriate interac-
    tions at any time. Second, the brother’s testimony was confused, contradic-
    tory and difficult to follow. The record reflects that the state continually
    had to refresh the brother’s recollection with a sworn statement given prior
    to trial, which was eventually admitted into evidence under State v. Whelan,
    
    200 Conn. 743
    , 
    513 A.2d 86
    , cert. denied, 
    479 U.S. 994
    , 
    107 S. Ct. 597
    , 
    93 L. Ed. 2d 598
     (1986), after the brother testified that he could not remember
    whether he had seen the defendant and B together on a second occasion.
    We cannot agree with the state that the brother’s testimony materially
    strengthened the state’s case against the defendant.
    We also disagree with the dissent’s suggestion that we are ‘‘attempt[ing]
    to rationalize an innocent explanation for [the defendant’s] sneaky behavior
    . . . [with] his teenage stepdaughter . . . .’’ See footnote 7 of the dissenting
    opinion. We are not ‘‘rationalizing’’ anything; we are assessing the strength
    of the state’s case on the basis of the evidence properly adduced at trial.
    We fail to see how the testimony of B’s brother ‘‘significantly strengthened
    the state’s case . . . .’’
    7
    The dissent’s assertion that the excluded evidence ‘‘did not pertain
    directly to the veracity of the complainant or the allegations themselves’’
    fails to acknowledge the direct bearing of this evidence on the assessment
    of B’s credibility under the particular circumstances of this case. A reason-
    able juror, unsure of whether to believe the allegations, could have used
    the behavioral symptoms identified by Rosenberg as a guide to decide
    whether the allegations of abuse were credible. This presumably is the very
    reason that the state elicited that expert testimony in the first place. It is
    unfair now, in assessing the potential significance of the evidence offered
    by the defense for the very purpose of taking advantage of the state’s
    inferential model, to say that the logic was weak and inconsequential.
    8
    This same point demonstrates the flaw in the dissent’s suggestion that
    the defendant suffered no disadvantage because defense counsel was able
    to present a jury argument based on the testimony of B and her mother
    even without the testimony of P. It is inaccurate to posit that no harm
    ensued from the trial court’s evidentiary ruling just because defense counsel
    tried his best using the scraps of state-supplied evidence available to him.
    The trial court’s erroneous evidentiary ruling was harmful because the
    defense’s jury argument would have been materially and significantly
    stronger had he been able to make use of P’s excluded testimony.