W-alternative explanation for the acquisition of phobias. The cognitive approach proposes that phobias may develop as a result of irrational thinking e.g. a person in a lift may think they could get trapped. Thoughts like these contribute to feelings of anxiety that lead a person to show emotional symptoms of phobias. Since the 2 process model does not account for this, it can be seen as simplistic, not considering important, cognitive mediating factors, thus decreasing validity