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Performance during acquisition (total trials, errors and omissions to criterion) of the simple discrimination (SD) and reversal (SDR) phases in cocaine-naïve (coc-naïve, n=9) and cocaine-experienced (coc-exp, n=5) monkeys. Data for errors was square-root transformed prior to analysis. Bars depict mean (± SD) values. *, p < 0.0125.
