PSYC 3140 Chapter Notes - Chapter 4: Rorschach Test, Positron Emission Tomography, Personality Disorder

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1 Feb 2013
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Chapter 4 Classification and Assessment of Abnormal Behaviour
- A categorical approach to classification assumes that distinctions among members of
different categories are qualitative (difference in quality then quantity)
- Major domains of information in the DSM-IV-TR:
Axis 1 Clinical Disorders and Other Conditions That May Be a Focus of
Attention (includes all mental disorders listed in the manual except those listed
on axis 2)
Axis 2 Personality Disorders and Mental Retardation (includes all personality
disorders and/or mental retardation. Clinician can also list maladaptive
personality features, characteristics defense mechanisms, or coping styles)
Axis 3 General Medication Conditions (includes medical problems that can
cause symptoms of an Axis 1 or Axis 2 disorder or act as a psychological stressor)
Axis 4 Psychosocial and Environmental Problems (includes life events from the
past year that may have an impact on diagnosis or treatment, such as divorce or
unemployment)
Axis 5 Global Assessment of Functioning (describes the person’s level of
psychological, social, and occupational functioning on a single scale from 1 to
100)
- Concurrent validity is concerned with the present time and with correlations between
the disorder and other symptoms, cirmustances, and test procedures
- Predictive validity is concerned with the future and with the stability of the problem
over time
- Reliability = consistent measurement across time and observers
- Validity = appropriateness, meaningfulness, and usefulness of inferences made from
test scores
- Inter-rater reliability = two raters agree
- Test-retest reliability = test scores are similar across time
- Internal consistency reliability = test items are correlated
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