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10. Signal frequency and shock probability as determinants of prolonged vigilance performance in rhesus monkeys. Krasnegor NA; Brady JV J Exp Anal Behav; 1972 Jan; 17(1):113-8. PubMed ID: 4623133 [TBL] [Abstract][Full Text] [Related]
11. Expectation of rewards and emotional behavior in monkeys. Melges FT; Poppen RL J Psychiatr Res; 1976; 13(1):11-21. PubMed ID: 823325 [No Abstract] [Full Text] [Related]