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Chapter 3, Assessment for Psychodiagnosis

PSY 266, Abnormal Psychology. Chapter 3, Assessment for Psychodiagnosis. “…the process of gathering information and drawing conclusions about the traits, skills, abilities, mental functioning, and psychological problems of the individual, generally for use in developing a diagnosis.”.

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Chapter 3, Assessment for Psychodiagnosis

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  1. PSY 266, Abnormal Psychology Chapter 3, Assessment for Psychodiagnosis

  2. “…the process of gathering information and drawing conclusions about the traits, skills, abilities, mental functioning, and psychological problems of the individual, generally for use in developing a diagnosis.” Assessing Abnormal Behavior

  3. The process: • Observe • Interview • Neurological tests • Psych. Tests and inventories Which must be…. Tools for assessment

  4. All of these “Assessments” must be… • Reliable – measures same way each time • Test-rest reliability (same person twice) • Internal consistency (split-half ) • Interrater reliability (different raters – same score?) • Valid – does it measure what it CLAIMS to measure? • Predictive? (of the future) • Criterion related? (really measuring something else?) • Construct? (correlate with other tests?) • Standardized(same administration/same comparison group) (your “assessment”)

  5. Controlled (in lab or office) • Naturalistic (school, office, home) • Include interviews • Reactivity might occur (observer should be objective and unobtrusive.) Reliable? Valid? Standardized? Observations

  6. Structured (checklist) • Unstructured (e.g. Psych Eval ) • Questions • Observations • Tasks Interviews

  7. Psychological Evaluation

  8. Psychological Tests and Inventories Rorschach Inkblot Test

  9. Another Rorschach

  10. Thematic Apperception Test (TAT)

  11. Another TAT • Criticisms: • Not standardized • Culture influences stories • Pictures tend to be negative • Based on Freud’s “repression”

  12. Sentence completion: My mother always ________. • Draw a person: Other Tests • Self-report inventories: • -- MMPI • Beck Depression Inventory • IQ: WISC, WAIS, WPPSI • Stanford-Binet Reliable? Valid?

  13. CT Scan – (x-rays) PET Scan – (radioactive) EEG – (Brainwaves) MRI – (Magnetic Field) Neurological Tests

  14. Shaky beginnings Allows mental health professionals to talk to each other about patients/clients. DSM-IV

  15. Five Axes from the DSM-IV Also look for Co-morbidity -more than one Axis I, II, III disorders Severity of the disorder Remission Psych Eval Problems Labels people Could lead to incorrect treatment Self-fulfilling prophecy (if patient doesn’t have) ignores how well a person functions

  16. Psychological Evaluation

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