The Delis Rating of Executive Function (D-REF) is a set of rating scales designed to assess executive functions and their constituent sub-processes in children and adolescents between the ages of 5 and 18. More specifically, the D-REF is a supplemental assessment of children and adolescents demonstrating behavioral or cognitive difficulties often associated with attention-deficit/hyperactivity disorder (ADHD), autism spectrum disorder (ASD), traumatic brain injury (TBI), learning disorders/disability, and other developmental, psychiatric, neurological, or medical conditions known to affect executive functions. The D-REF is grounded in the broad conceptualization that executive functions are the product of many higher order cognitive processes providing the basis for goal attainment. In the description underlying the structure of the D-REF, Delis emphasizes the current literature on executive function regarding the roles of self-regulation and management, as it affects behavioral functioning. As successful goal attainment is related to the integration of emotional, behavioral, and cognitive functioning, the D-REF assesses these constructs within four broad areas of global executive function: Attention/Working Memory (AWM); Activity Level/Impulse Control (AIC); Compliance/Anger Management (CAM); and Abstract Thinking/Problem Solving (APS). The D-REF is intended to be a first-line assessment from which to direct additional investigation with other standardized executive functions assessments. This paper discusses the following regarding the D-REF: categories of index scores; the scoring system; technical adequacy; commentary; and recommendations.