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. Author manuscript; available in PMC: 2014 Jan 30.
Published in final edited form as: J Exp Psychol Anim Behav Process. 2012 Dec 3;39(1):24–38. doi: 10.1037/a0030765

Figure 9.

Figure 9

Mean (± SEM) proportion of choices for the uncertain side in the simulated dynamic probability-of-food phase as a function of the most recent outcome and the probability of uncertain food. The simulations using a time-based rule are in the top panel; those using a trial-based rule are in the bottom panel. The α parameter for the exponential (EXP) valuation rules is indicated in parentheses. C-L = certain-large; C-S = certain-small; TWR = temporal weighting rule; U-L = uncertain-large; U-S = uncertain-small; U-Z = uncertain-zero.