The Evolving “D” in “BASIC ID”

The multimodal counseling model is based on the notion that a client's concerns can be dealt with most successfully when the counselor or therapist treats several aspects of a client's functioning. The multimodal model uses the acronym BASIC ID to identify the areas of client functioning that frequently need to be treated. These areas include behavior, affect, sensation, imagery, cognition, interpersonal relations, and drugs. The D mode, which represents drugs, is a misunderstood aspect of the BASIC ID partly because it does not seem to parallel other aspects of the model. Over the past few years the D mode has been expanded to include more than drugs, in particular, to include diet and other physiological factors. This article describes the evolution of the D mode and attempts to show the importance of a physiological dimension to the multimodal counseling approach.