“…In addition to studies that evaluated operant renewal as a singular relapse phenomenon, we also included preparations that combined contextual changes with other variables commonly associated with relapse (e.g., the resurgence of maladaptive behavior as a result of decrements in reinforcement for a newly taught alternative response). We included these studies because combined relapse arrangements may better simulate what occurs in practice when multiple environmental events interact during relapse (e.g., Mitteer, Greer, Fisher, Briggs, & Wacker, ). We excluded studies that (a) examined operant renewal using nonhuman animal subjects, (b) examined renewal in a respondent conditioning paradigm with humans, (c) described simple failures of generalization across environments or contexts (e.g., Schindler & Horner, ), (d) did not report or display data at the individual level, and (e) were reviews, metaâanalyses, book chapters, or dissertations.…”