title: Serpent versus surrogate and other determinants of runway fear differences.
mesh_terms: D000328:Adult; D000818:Animals; D001521:Behavior Therapy; D005239:Fear; D005260:Female; D006801:Humans; D007100:Imitative Behavior; D008297:Male; D010698:Phobic Disorders / Q000628:therapy*; D012737:Sex Factors; D012911:Snakes; D012919:Social Behavior