BELLEFONTE, Pa. – Jerry Sandusky’s wife smiled as she took the witness stand on Tuesday to defend him against charges he sexually abused boys in their home and on Penn State’s campus, and jurors also heard police investigators contradict themselves and psychological experts duel over evaluations of the defendant.

Dottie Sandusky said she remembered most but not all of the eight men who have accused her husband of abusing them as children. She told jurors she did not see him have inappropriate contact with them over the years they visited the couple’s home or traveled with them.

In a calm voice during an hour of testimony, she described her 45-year marriage to the former Penn State assistant football coach, but lead prosecutor Joe McGettigan appeared to stump her when he asked why the men might lie in making the accusations.