The typicality of therapeutic 'surprises'.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001007:Anxiety / Q000523:psychology / Q000628:therapy*; D001521:Behavior Therapy; D003729:Dental Care / Q000523:psychology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D010146:Pain / Q000523:psychology