Behavioural Experiments in Cognitive Therapy for Posttraumatic Stress Disorder: Why, When, and How?

Behavioural experiments are an integral component of cognitive therapy (CT) for posttraumatic stress disorder (PTSD), but they can be overlooked due to practical constraints and therapist concerns. Here we describe why behavioural experiments are an important part of CT, where they fit into different elements of treatment for PTSD, how to design and implement effective experiments including coping with unexpected outcomes, and how to incorporate behavioural experiments when therapy is delivered remotely. Clinical case examples are used to illustrate a range of idiosyncratic and creative behavioural experiments.