Evidence of grooming behavior provides substantive corroboration of abuse. More importantly, the grooming behavior explains delayed disclosure issues which are difficult for juries to understand. This presentation will provide a mock trial direct examination between the prosecutor and the expert witness. The presentation will illustrate how to qualify the expert, how to explain the stages of grooming, and how the grooming causes delayed disclosure. Use of this expert witness is very powerful, compelling evidence, but it is critical to know the boundaries of what your expert can and cannot opine in this examination.