Abstract
Effects of chlorpromazine and d-amphetamine on food dominance were studied in 18 purebred dogs over a 10-wk. period. Dominance was determined by time spent at a common food dish. Trials were conducted each week with no drugs to determine the dominance relationships, followed by each dominant and submissive member receiving either saline, d-amphetamine, or chlorpromazine. New pairings were created on the following week with a total of 72 pairings and 144 drug treatments. Dominance (dominant or submissive) was a function of particular pairings. Amphetamine altered dominance relationships only when administered to the dominant animal. Chlorpromazine altered the dominance relationship only when administered to the submissive animal.
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