Phase	Contents of the Treatment	Mean Number of Psychotherapy Sessions
1	Reconstruction and sharing of the functioning scheme of patient’s disorder and specific symptomatology	4
2	Modulate beliefs that support the negative or threat evaluation of the critical event and that sustain the motivation: cognitive restructuring techniques	5
3	Accepting the risk (threat) to reduce investments in prevention: cognitive techniques to facilitate willingness to accept feared stimuli exposure and the progressive renunciation of compulsions	8
4	Exposure and response prevention (ERP)	10
5	Intervention to reduce OCD historical vulnerability	5