What is exposure therapy, and how does it work? ERP is exposure and response prevention therapy. First, we prepare an exposure hierarchy using a graded approach. This means we list all the triggers . How much anxiety is associated with that particular trigger? What are the beliefs? Does the person follow rituals? What are their compulsions? And what emotions dominate them? We have them make a complete list. And then, based on that list, we first expose the child to less anxiety-producing situati