What is the impact of an expert's testimony on sexual abuse?

Benavides's testimony helped explain why Doe's delay in reporting the alleged abuse, as well as her inability to pin down specific instances, was not inconsistent with her claim that she was so abused. Benavides couched his testimony in terms of victims as a class, he did not refer to Doe specifically. Benavides's testimony regarding the lack of any profile for a "typical" child molester was also admissible. (See People v. McAlpin, supra, 53 Cal.3d at p. 1302 [without expert testimony "many jurors would tend to rely . . . on the widespread public image of the child molester as an old man in shabby clothes who loiters in playgrounds or schoolyards and lures unsuspecting children into sexual contact by offering them candy or money"]; id. at pp. 1302-1304.)