“…In addition, there are a number of other evidence-based intervention procedures such as stimulus discrimination training, prompting, fading, shaping, chaining, generalization, and so on that make up the field of applied behavior analysis (e.g., Cooper, Heron, & Heward, 2007). Given the status of the MO as a basic principle of behavior and independent variable in behavior analysis (Michael, 2007;Skinner, 1938Skinner, , 1953Skinner, , 1957, it should be added to the list of assessment and intervention tools that are available to applied behavior analysts for producing behavior change (e.g., Carbone et al, 2008;Michael, 1988;Sundberg, 1993;Sundberg & Michael, 2001). In the section titled ''Changing motivational and emotional variables'' Skinner describes how motivation can be manipulated as an independent variable.…”