Figure 2.

Mean suppression ratio in Experiment 2 of the testing of Cue x (i.e., block of four trials). Group 15–15 Block was the group in which weak responding to x was expected because of the blocking of Cue x by Cue A. Conversely, Groups 3–15 Block, 15–15 no Block, and 3–15 no Block were those in which strong responding to Cue x was expected (see table 2). the error bars represent standard errors of the means.