Jerry Sandusky can have an expert testify about a psychiatric condition that his lawyer says could explain his letters to boys and other actions.
Judge John Cleland on Friday ruled in favor of a Sandusky motion seeking to put evidence of ''histrionic personality disorder'' before jurors in his child sexual abuse case.
Cleland's order says Sandusky must also make himself available for prosecutors so they can prepare rebuttal psychological testimony.
The defense says people with the disorder wouldn't necessarily be grooming boys to molest them, but instead to ''satisfy the needs of a psyche'' with the disorder.
Testimony in the 68-year-old former Penn State coach's criminal trial is to resume Monday. He's facing 52 charges he abused 10 boys over 15 years. He has denied the allegations.