Item-analysis procedures were used to reduce a 51-item hostility scale to a 20-item version with equivalent reliability and convergent validity, yet freer of desirability variance. Evidence presented in a multitrait-multimethod matrix (8 traits by self-ratings of trait adjectives and by item endorsements) indicated an enhancement of discriminant validity in the shorter form. The technique is presented as a means for improving the validity of scales developed by other earlier scale construction methods.
Get full access to this article
View all access options for this article.
References
1.
CaineT. M.FouldsG. A.HopeK.Manual of the Hostility and Direction of Hostility Questionnaire. London: Univer. of London Press, 1967.
2.
CampbellD. T.FiskeD. W.Convergent and discriminant validation by the multitrait-multimethod matrix. Psychological Bulletin, 1959, 56, 81–105.
HorstP.Personality: Measurement of dimensions. San Francisco: Jossey-Bass, 1968.
5.
JacksonD. N.A modern strategy for personality assessment; the Personality Research Form. London, Ontario: Univer. of Western Ontario, 1966. (Res. Bull. No. 30).
6.
JacksonD. N.Manual for the Personality Research Form. Goshen, N.Y.: Research Psychologists Press, 1967.
7.
JacksonD. N.MessickS.Content and style in personality assessment. Psychological Bulletin, 1958, 55, 243–252.
8.
JacksonD. N.MessickS.Differential Personality Inventory (Form L). College Park, Pa.: Authors, 1964.
9.
LoevingerJ.Objective tests as instruments of psychological theory. Psychological Reports, 1957, 3, 635–694. (Monogr. Suppl. 4-V3).
