PS381 Chapter Notes - Chapter 3: Statistical Classification, Inter-Rater Reliability, Etiology
Document Summary
Classification allow scientists to organize, describe, and relate the subject matter of their discipline. Validity = extent to which the principle used in classifying an entity are effective in capturing the nature of the entity. Utility = refers to the usefulness of the resulting classification scheme. Categorical approach = in which an entity is determined to be either a member of a category or not. Dimensional approach = based on the assumption that entities differ in the extent to which they possess certain characteristics or properties. Diagnostic system = a classification based on rules used to organize and understand diseases and disorders. Diagnosis = concisely describes the symptoms that comprise a persons condition. Prototype model = members of a diagnostic category may differ in the degree to which they represent the concepts underlying the category. Abnormal behavior is not just rare, unusual, or bizarre. Determining behavior as abnormal requires knowledge of the context in which the behavior occurs.
