Skip to main content
. Author manuscript; available in PMC: 2017 Aug 1.
Published in final edited form as: Drug Alcohol Depend. 2016 May 28;165:103–110. doi: 10.1016/j.drugalcdep.2016.05.021

Figure 1. Effects of reinforcer magnitude in units of pellet number (A) or cocaine dose (B) on the number of trials completed during single-alternative training.

Figure 1

Each condition was presented for a minimum of 7 days and until stable responding was observed. All points show mean±SEM for the final 3 days in 4 monkeys. Asterisks (*) indicate statistical significance (p < 0.05) compared to 0 pellets (A) or saline (B).