<prompt> Which of the following defense mechanisms are seen in obsessive compulsive disorder i Reaction formation ii Undoing iii Dissociation iv Isolation of affectAll are presentI, II, III are presentI, II IV are presentII IV are present  <response>: Reaction formation, Undoing, Isolational affect, Displacement and Inhibition are the defense mechanisms associated with obsessive compulsive disorder.Dissociation is seen with Dissociative disorders. 