Modeling stuttering etiology : Clarifying levels of description and measurement : The Demands and Capacities Model

The clarity and applicability of the demands and capacities model (DCM) of stuttering development has been challenged by a number of investigators. In this article, both the helpful and deleterious aspects of the DCM are discussed with a view toward the complexity and utility of multifactorial models of stuttering in general. Issues related to the description and measurement of pertinent variables and two promising multifactorial characterizations of stuttering development are highlighted.