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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Behav Brain Res. 2013 Jun 10;252:117–125. doi: 10.1016/j.bbr.2013.06.002

Figure 4.

Figure 4

Comparison of performance on the operant strategy-shifting task in rats exposed to saline (control; n = 8–9) or AMPH during adolescence (n = 9–10) or adulthood (n = 7–10). Rats began with a visual strategy, shifted to a response strategy, and finally reversed the response strategy. Rats that failed to acquire a strategy within one session were excluded from subsequent analyses. (A) Trials to criterion and (B) errors to criterion are shown for the three strategies: visual, response, and reversal. (C) Percent of total errors on the response strategy classified as perseverative errors (PE), regressive errors (RE), or never reinforced errors (NRE). * p < 0.05, ** p < 0.01 vs. adolescent-exposed within strategy.