Schizotypal traits can include paranoia, social anhedonia (a preference
for solitary activities over social interactions), paranormal beliefs and perceptual distortions.
Patients were excluded based on the following criteria: high risk
for suicide; substance abuse or dependence in the past six months; lifetime history of psychotic, obsessive — compulsive, or bipolar disorder; eating disorder in the past year; borderline,
schizotypal, or antisocial personality disorder; serious medical conditions; and failure of two empirically supported psychotherapy treatments or two adequate antidepressant medication trials in the past three years.