“…Next, they evaluated descriptive analysis data, obtained via direct observation without manipulating any variables and collected during observations in the children's natural environment, and found that appropriate behavior (communication) and problem behavior (self-injury, aggression) were almost perfectly allocated in a manner predicted by the matching law. Sy, Borrero, and Borrero (2010) used similar logic to study choices between problem behavior (e.g., aggression) and appropriate behavior (e.g., compliance with instructions) of a young man with autism. A functional analysis had shown that the boy's problem behavior was reinforced by escape from instructional demands and access to preferred tangibles.…”