Figure 2.

Rule violations in the classroom over week of treatment as a function of fixed-criteria versus random-criteria on the daily report card. The baseline (week 1) level of rule violations before implementing a daily report card is shown by the dotted line. The number above or below each data point is the criterion used to define success, with success numbers during the Fixed Criteria weeks determined by counselors and held constant within each week and success numbers during the Randomized Criteria weeks determined by daily lottery and reported as within-week rounded averages.