Psychology 3301F/G Chapter Notes - Chapter 3: Biopsychosocial Model, Comorbidity, Posttraumatic Stress Disorder

• School: Western University
• Department: Psychology
• Course: Psychology 3301F/G
• Professor: Graham Reid

Document Summary

Clinical psychology chapter 3: 2 key aspects of the adequacy of classification systems are validity and utility. Classification utility: the usefulness of a classification scheme. Classification validity: the extent to which the principles used in classifying an entity are effective in capturing the nature of the entity. Dimensional approach to classification: classified entities differ in the extent to which they possess certain characteristics or properties focuses on quantitative differences and assumes all entities can be arranged on a continuum. Thomas achenbach discovered 2 broad dimensions of problems: externalizing problems and internalizing problems: achenbach"s work resulted in the development of achenbach system of empirically based assessment (aseba) to measure competence and problems across the lifespan. Diagnosis: the result of applying the decision-making rules of a diagnostic system to the symptoms of a specific individual. Diagnostic system: a classification based on rules used to organize and understand diseases and disorders. Purposes of a diagnostic system for mental disorders .