PMC4354942_01
Upper panel: Responses per minute of aggression during baseline (BL) and treatment conditions. Lower panel: Responses per minute of mands (left axis), and per cent of compliance with task demands (right axis) during BL and treatment conditions. Asterisks above the data points for problem behavior (upper panel) indicate sessions where both direct reinforcement of alternative behavior (DRA)+ tangible extinction (EXT) and DRA + escape EXT were operative.
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F2
As the patient showed sustained improvements in compliance and low rates of aggression during the demand (escape) condition, task requirements were systematically extended, requiring that she complete a greater number of tasks before earning the small food item (Fig. 2). A green card was displayed during times in which mands would be reinforced, whereas a red card was displayed during EXT periods (see Fig. 2 for the reinforcement thinning/ signal schedule.) If aggression occurred, the interval was reset according to the FI schedule in effect for that session.