Figure 2.
Effects of single stressor exposure (stress-exposed rats n = 9, controls n = 9) prior to the two-lever choice tests on lever preference (Experiment 2). Response rates for the lever that delivered valued and devalued outcomes on test days 1 and 2 are shown. On both test days, the outcomes (pellets vs. sucrose) were devaluated in a counterbalanced manner. On day 1, there was a significant devaluation effect, but no devaluation × treatment interaction. On day 2, there was a significant effect of devaluation and treatment, but no devaluation × treatment interaction.
