State v. Cowen, 2012 Ohio 3682

Cowen was convicted after a jury trial of rape, gross sexual imposition, and kidnapping involving a six-year-old victim, with kidnapping merged into rape for sentencing.
The State’s case included the child’s spontaneous statements to a social worker and medical staff, plus expert medical testimony diagnosing child sexual abuse.
The court excluded evidence about alleged Florida incidents and certain testimony challenging the police investigation, ruling on evidentiary and confrontation grounds.
Cowen challenged the trial court’s evidentiary rulings, the handling of witness testimony, closing-argument time limits, and Dr. Feingold’s testimony as vouching for the victim.
The trial court sentenced Cowen to two concurrent life-maximum terms for rape and concurrent terms for gross sexual imposition, and classified him as a Tier III sex offender; on appeal, the conviction and sentence were affirmed.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Confrontation and exclusion of prior acts	Cowen argues Florida evidence and Tammy’s testimony violated confrontation rights	Cowen asserts improper restriction on evidence of prior acts	No error; exclusion upheld as within trial court’s discretion
Impeachment by extrinsic evidence	Cowen contends Velton impeachment and tapes were improperly excluded	Velton and tapes were improper collateral matters for credibility	Exclusion of Velton and tapes affirmed; not material to guilt under Evid.R. 613(B)
Closing argument time limit	Cowen claims 30-minute limit violated due process	Limit was reasonable given complexity and number of witnesses	Limit found unreasonable, but error harmless beyond a reasonable doubt
Dr. Feingold’s testimony under Boston rule	Feingold’s diagnosis of child sexual abuse was admissible auxiliary expert testimony	Doctor’s testimony amounted to vouching for victim’s veracity	Testimony admissible; not improper vouching under Boston
Sufficiency and weight of the evidence	J.C.’s testimony alone sufficed to prove elements	Evidence was insufficient or against the weight of the evidence	Convictions supported by sufficient evidence and not against the manifest weight

State v. Sage, 31 Ohio St.3d 173 (1987) (abuse-of-discretion standard for evidentiary rulings)
State v. Jenkins, 473 N.E.2d 264 (1984) (framework for closing-argument analysis and trial timing discretion)
State v. Ferrette, 18 Ohio St.3d 106 (1985) (limits on closing arguments and evidentiary considerations)
State v. Boston, 46 Ohio St.3d 108 (1989) (expert testimony on abuse permissible; no vouching for veracity)
State v. Gersin, 668 N.E.2d 486 (1996) (clarifies admissibility of expert testimony on abuse)
State v. Antill, 176 Ohio St. 61 (1964) (credibility and weight of witness testimony; jury determinations)
State v. Garner, 656 N.E.2d 623 (1995) (jury instruction and curative admonitions respected; presumptions)