Figure 8.

Performance on the Control Condition, which controlled for the possibility of subconscious cueing by experimenters. (A) Performance on the sequential trials of Experiments 1 and 2 and the Control Condition, plotted by trial number. Performance on the Control Condition was not impaired relative to performance on Experiments 1 and 2. (B) A comparison of performance on the first day of testing for Experiment 1 vs. the first day of testing on the Control Condition. The data presented from Experiment 1 only include numerical pairs that are as easy as those from the Control Condition (numerical ratios ≤0.5). Error bars represent standard error of the mean difference between monkeys.