ABSTRACT
The evaluation of intellectual and developmental disorders has served as the blueprint for understanding neurodevelopmental disorders. Many developmental assessment procedures have their basis in the measurement of intelligence; however, dimensional assessment as a model has led to the appreciation that intelligence measurement is simply the wrapping covering the highly complex variables of developmental competence. Comorbid medical and psychiatric conditions are the rule rather than the exception, and intervention must be tied to the specific strengths and needs of the patient.
