Antecedents to behavior fixations.
D000818:Animals; D001007:Anxiety; D001362:Avoidance Learning; D003220:Conflict, Psychological; D003463:Cues; D004193:Discrimination Learning; D004597:Electroshock; D005108:Extinction, Psychological; D006801:Humans; D008960:Models, Psychological; D009042:Motivation / Q000187:drug effects; D011678:Punishment; D051381:Rats; D012201:Reward