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(THE CONVERSATION) In the wake of sexual assault and harassment allegations involving Harvey Weinstein and Bill O'Reilly, Americans may be learning just how prevalent sexual violence is in our society.

So, what can be done to prevent it?

We have studied how family, school and neighborhood environments influence violent youth behavior. Building from this knowledge, we are working with schools to develop prevention programs.

Here’s what we’ve learned.

Reducing the risksDecreasing sex...