A DRAFT OF THE PATHOLOGICAL DEMAND AVOIDANCE – BELIEFS SCALE (PDA-BS). Introduction. This blog post is an expanded debate entry I have started on Researchgate about a tool to assess a person’s beliefs when they are involved in Demand Avoidance Phenomena (DAP, sometimes called Pathological Demand Avoidance) research. This is the latest draft of the … Continue reading A DRAFT OF THE PATHOLOGICAL DEMAND AVOIDANCE – BELIEFS SCALE (PDA-BS).