Advantages of classification
1) Predictions - can predict future behavior, know what to expect
2) Communication - means to communicate among clinicians
3) Research - provides research categories
4) Stats - provide basis for epidemiological records -> increase understanding
Disadvantages of classification
1) Puts label on people, produces social stigma, can be self-fulfilling prophecy
2) Categories not perfect - much overlap across categories
3) Diagnoses may not be reliable/consistent - diff clinicians -> diff conclusions, variations in client behavs over time
4) Subjectivity of diagnostic categories
Examples of subjectivity of diagnostic categories
Changes in DSM-5
Evolution of DSM
Early editions: psychodynamically oriented
Version III: more medical approach -> multiaxial, 5 axes (primary diagnosis, personality disorders, relevant physical disorders, psychosocial/environmental stressors, global assessment of functioning)
Reliability of classification
Diagnosis on same client consistent over different clinicians, consistent over time
Validity of classification
Does it group people together with the same cause of symptoms and same effective treatments
Types of interview assessments
“Intelligence” tests
Measure intellectual functioning and speed of cog functioning
Personality Assessments
Behavioral Assessment
Observe/record frequency/duration of target behavior
Cognitive assessment
Measure thoughts/beliefs, attitudes, etc. Questionnaires, self-measuring, interviews
Relational assessment
Context of behavior
Bodily assessment
Measure physiological functioning - skin conductance, BP, arousal, brain imaging
Reliability of assessment instruments
Consistency of measure
Validity of assessment instruments
Is the test measuring what I want it to?
Cultural issues in assessment
Constructs not equivalent cross-culturally (like intelligence) - scores on some measures may not be equivalent/comparable to same scores on different cultural samples
Cultural issues in diagnosis
Behavior associated with disorder in 1 culture may not be abnormal in another culture