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. 2007 Jul;88(1):29–49. doi: 10.1901/jeab.2007.122-04

Fig 3. Presses on each lever as a percentage of the overall number of responses on the seven levers for the 3 subjects exposed to each FT schedule.

Fig 3

The data are from the first and the last blocks of five sessions. The A coefficient was calculated as a measure of response variability and is shown at the upper-right corner of each panel. The dotted bar represents the operative lever.