Defendant appeals from a conviction for committing lewd or lascivious conduct upon the body of a child, in violation of 13 V.S.A. § 2602. We affirm.
*461 The conduct occurred on or about January 1, 1984, and was first reported at the beginning of March, 1984 when the six-year-old complainant told her babysitter that the defendant had undressed her and laid on top of her. The babysitter informed the child’s mother, who brought the child to a physician. The physician examined the child and relayed relevant information to the Department of Social and Rehabilitation Services, which conducted an investigation in conjunction with the state’s attorney’s office, ultimately resulting in defendant’s conviction.
The defendant claims that the trial court erred by admitting expert testimony about behavior of other children who had been sexually abused, improperly instructing the jury about defendant’s alibi defense, and impermissibly allowing the State to use in its case-in-chief evidence of alleged threats made by the defendant to the victim.
At trial, the State offered expert testimony to show that delays in reporting incidents of sexual assault or sexual abuse are common among children who are the victims of such abuse. Defendant claims that the State’s expert was not sufficiently qualified as an expert to testify, and, if she was so qualified, that her testimony was inadmissible.
A trial court has discretion to admit expert testimony if it “will assist the trier of fact to understand the evidence . . . .” V.R.E. 702.
1
Whether the qualifications of an expert have been properly established is a matter left to the discretion of the trial court.
Northern Terminals, Inc.
v.
Smith Grocery & Variety, Inc.,
The defendant has also challenged the substance of the expert’s testimony. Defense counsel cross-examined the complainant’s mother concerning the complainant’s three-month delay in reporting the assault. The State’s expert then testified in rebuttal that fear may prevent abused children from reporting an incident for a long period of time. We conclude that the testimony was properly admitted. The behavioral patterns of child victims of sexual abuse are generally not known to the average juror and are therefore a proper subject for expert testimony. See
State
v.
Catsam,
The testimony did not, as defendant argues in his brief, “improperly bolster the credibility of the complainant.” The expert did not testify on the complainant’s credibility but addressed only the parameters of reporting, and whether it is common for child victims of sexual abuse to delay telling someone what occurred. “The fact that the jury, if it believes the expert’s testimony, may draw inferences which would tend to bolster the victim’s credibility does not make the evidence inadmissible. . . . [S]o long as the expert does not render an opinion on the accuracy of the victim’s recitation of facts, his or her general testimony on the dynamics of sexual abuse does not prejudice the jury.”
Commonwealth
v.
Baldwin,
*463
Defendant’s reliance on
State
v.
Percy,
The testimony elicited upon direct examination in
Percy
must be distinguished from the situation in this case, where the defense has attacked a witness for the State, and evidence is offered to explain the testimony of that witness. See
State
v.
Claflin,
Defendant’s second claim on appeal is that the trial court improperly instructed the jury about permissible inferences that could be drawn if the jury disbelieved defendant’s alibi defense. *464 Defendant argues that the trial court erred by not instructing the jury that they must believe “beyond a reasonable doubt” that defendant’s exculpatory statement was “deliberately and knowingly false” before they could infer guilt from the statement.
While the defendant made an objection to the charge at the charge conference and at the conclusion of the charge, it was not made on the ground argued here and was not preserved for our review.
State
v.
Kerr,
Defendant’s third claim on appeal is that the trial court erred by admitting evidence that he had allegedly threatened the complainant with harm if she disclosed the incident. Defendant argues that this evidence of alleged threats constitutes evidence of “other bad acts,” is highly prejudicial, and necessitates reversal. See V.R.E. 404(b). Although defendant asserts correctly that evidence of other wrongs or acts is inadmissible to show a propensity on the part of a defendant to act in conformity therewith,
State
v.
Moran,
Defendant objects to the testimony of three witnesses which indicated that the victim had “express[ed] fear,” said “she was scared,” and “was very angry and was afraid.” 2 The testimony relating to the victim’s fear referred only to the incident forming the basis for the charge, and was probative with respect to reasons for complainant’s delay in reporting. It did not, as defendant urges, constitute evidence of other bad acts.
Affirmed.
Notes
V.R.E. 702 provides:
If scientific, technical, or other specialized knowledge will assist the trier of fact to understand the evidence or to determine a fact in issue, a witness qualified as an expert by knowledge, skill, experience, training, or education, may testify thereto in the form of an opinion or otherwise.
The complainant’s mother testified that the complainant had told her that the defendant had threatened her life and that if she told “she would get the same thing only worse next time.” Upon objection and a motion for mistrial by defense counsel, the trial court struck this answer and instructed the jury that it was not to be considered.
