Task: Text Categorization
Input (English): Question: One of the main limitations of the behavioral treatment (exposure with prevention of response) of OCD is: 
 Options:  <0> His recent appearance. <1> The reduced efficacy compared to cognitive and pharmacological treatments. <2> The lack of an explanatory theoretical model. <3> The difficulty of application in cases of motor rituals. <4> The existence of a relevant percentage of patients who reject treatment because of its aversive nature.
Output (English): psychology