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. Author manuscript; available in PMC: 2018 Jun 1.
Published in final edited form as: Psychopharmacology (Berl). 2017 Mar 31;234(12):1815–1828. doi: 10.1007/s00213-017-4590-0

Figure 7.

Figure 7

Mean reinforcers obtained (±SEM) in isolated (Iso: open squares/bars) and Social (Soc: closed circles/bars) groups from Experiment 4 across acquisition sessions collapsed across Sex and Dose and the total reinforcers obtained (±SEM) collapsed across Session and Dose (inset). An FR1 schedule of reinforcement was in effect during sessions 1-3 and a progressive ratio schedule was in effect during sessions 4-20 that increased from an FR1 to FR2 to FR 3 depending on individual performance with the criterion for advancement of 5 reinforcers obtained within 60 min. Asterisk (*) represents a difference from Soc, test of simple effects, ps<0.05. Plus sign (+) represent a difference from all other groups, test of simple effects, p <0.05.