Contemporary ERP can be delivered in several ways. One
highly successful format comprises a few hours of assessment
and treatment planning followed by 16 twice-weekly treatment
sessions lasting about 90 to 120 minutes each and spaced
over about 8 weeks (9). Generally, the therapist supervises the
exposure sessions and assigns self-exposure practice to be
completed by the patient between sessions. Depending on the
patient's symptom presentation and the practicality of confronting
actual feared situations, treatment sessions involve
varying amounts of actual and imaginal exposure practice