Single linear regressions revealed a significant effect of value (p?= 0.001) and a lesser, not statistically significant, effect of risk (p?= 0.073). The difference in regression slopes (��) between these regressions was nonsignificant (p > 0.1; two-tailed t test). These findings are consistent with previous evidence for risk-seeking behavior in macaques (Hayden and Platt, 2007?and?McCoy and Platt


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