Journal
JOURNAL OF APPLIED PSYCHOLOGY
Volume 91, Issue 1, Pages 25-39Publisher
AMER PSYCHOLOGICAL ASSOC
DOI: 10.1037/0021-9010.91.1.25
Keywords
personality measurement; test construction; item response theory
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The present study investigated whether the assumptions of an ideal point response process, similar in spirit to Thurstone's work in the context of attitude measurement, can provide viable alternatives to the traditionally used dominance assumptions for personality item calibration and scoring. Item response theory methods were used to compare the fit of 2 ideal point and 2 dominance models with data from the 5th edition of the Sixteen Personality Factor Questionnaire (S. Conn & M. L. Rieke, 1994). The authors' results indicate that ideal point models can provide as good or better fit to personality items than do dominance models because they can fit monotonically increasing item response functions but do not require this property. Several implications of these findings for personality measurement and personnel selection are described.
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