Response modes represent organizational schemes (taxonomies) for behavior. One example of response modes includes motor, verbal, cognitive, emotional, and physiological response systems. Another example is the emotional-motivational, language-cognitive, and sensory-motor basic behavioral repertoires of psychological behaviorism (Staats, 1996). The measurement of multiple response modes is important because behavior problems can have multiple response modes that can be discordant and asynchronous across time and clients as well as differentially controlled by other events and differentially sensitive to treatment. For these reasons, a measure with multiple modes of measurement has the potential to provide a better understanding of clinical phenomena. Each response mode for a particular facet, however, would need to demonstrate discriminant validity with the other response modes for the facet in order to be useful.
It is important to note that facets and modes can overlap at times. For example, the facets of a particular construct, such as anxiety, might include the motor, cognitive, and physiological response modes. Here the three general response modes are functioning as facets of the anxiety construct. Within the cognitive mode, however, several different facets might represent the different types of cognitive anxiety. Thus, although there can be overlap between facets and modes, the distinction is still an important one.
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