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. Author manuscript; available in PMC: 2010 Apr 20.
Published in final edited form as: J Exp Psychol Anim Behav Process. 2008 Apr;34(2):202–222. doi: 10.1037/0097-7403.34.2.202

Figure 13.

Figure 13

Data from the PIT tests of Experiment 4 for groups trained with 20-s or 2-s CS-US intervals. Mean instrumental responses (+/- standard error) are shown separately during the pre stimulus period, and during the stimuli according to whether the stimulus and response were reinforced previously with the same or different US. Panel A shows data from the test sessions in which the stimuli were tested at their training durations in each group. Panel B shows data from the second set of test sessions in which the stimuli were tested at the other groups training durations.