Function-Altering Effects of Rule Phrasing in the Modulation of Instructional Control

Steady-state median switch points from PT to FT schedule selection as a function of step size. From left to right, the columns depict the directive, generic, non-directive, and control conditions, respectively. Open circles denote data for the ascending sequence and closed circles denote data for the replication sequence. Asterisks indicate a steady-state switch point obtained with two consecutive median switch points. The long dashed, short dashed, and solid lines depict the molecular, molar, and instructed response patterns, respectivel