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. Author manuscript; available in PMC: 2019 Mar 1.
Published in final edited form as: J Exp Anal Behav. 2018 Jul 25;110(2):267–274. doi: 10.1002/jeab.464

Figure 3.

Figure 3.

Group preference data for Conditions 1 (top panel), 2 (middle panel) and 3 (bottom panel). The dotted line defines a proportion of 0.5. The range bars through each data point define +1/−1 standard error of the mean. See text for other details.