ERIC Number: EJ554825
Record Type: Journal
Publication Date: 1997
Reference Count: N/A
An Empirical Test of Roskam's Conjecture about the Interpretation of an ICC Parameter in Personality Inventories.
Zumbo, Bruno D.; Pope, Gregory A.; Watson, Jackie E.; Hubley, Anita M.
Educational and Psychological Measurement, v57 n6 p963-69 Dec 1997
E. Roskam's (1985) conjecture that steeper item characteristic curve (ICC) "a" parameters (slopes) (and higher item total correlations in classical test theory) would be found with more concretely worded test items was tested with results from 925 young adults on the Eysenck Personality Questionnaire (H. Eysenck and S. Eysenck, 1975). Results did not support Roskam's proposed interpretation. (SLD)
Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
Authoring Institution: N/A
Identifiers - Assessments and Surveys: Eysenck Personality Inventory