Habituation to fear stimuli in a case of obsessive compulsive disorder: examining the generalization process

The purpose of this investigation was to determine if habituation of anxiety to a visual form of the number 13 would generalize to other forms (auditory, behavioral and cognitive) of the number 13 in a 20-year-old male with obsessive compulsive disorder. Treatment included exposure and response prevention. A multiple baseline design across fear stimulus forms was used. Habituation to the visual form began generalizing to other forms of the number 13 before prolonged exposures to these three stimulus forms were instituted. Results suggest that exposure to a single stimulus form may result in sufficient generalization of treatment effects in cases involving seemingly independent fear responses to several forms of a stimulus.