Study McCrae & Costa (1991): study US Baltimore County, Maryland 1979
- Public
- Single males and couples Baltimore USA, followed 7 years, 1979-86
- Sample
- Respondents
- N = 429
- Non Response
- Assessment
- Questionnaire: Paper & Pencil Interview (PAPI)
Correlate
- Authors's Label
- Extraversion
- Our Classification
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- Operationalization
- Index of closed questions answered by Ss and spouse. NEO Personality Inventory (Costa ea 1985). Typical characteristics of high scores are:
-sociable, affectionale
-active, optimistic
-funloving
-person oriented
Assessed at T1(1979), T2(1981) and T3(1986)