Longitudinal models of reliability and validity: A latent curve approach

Author(s): Tisak, M. S.

Journal/Book: Appl Psychol Meas. 1996; 20: N657 Elliott Hall, Univ of Minnesota, Minneapolis, MN 55455-0344. Applied Psychological Measurement Inc. 275-288.

Abstract: The concepts of reliability and validity and their associated coefficients typically have been restricted to a single measurement occasion. This paper describes dynamic generalizations of reliability and validity that will incorporate longitudinal or developmental models, using latent curve analysis. Initially a latent curve model is formulated to depict change. This longitudinal model is then incorporated into the classical definitions of reliability and validity. This approach permits the separation of constancy or change from the indexes of reliability and validity. Statistical estimation and hypothesis testing may be achieved using standard structural equations modeling computer programs. These longitudinal models of reliability and validity are demonstrated on sociological and psychological data.

Note: Article VS-Card Tisak J, Bowling Green State Univ, Dept Psychol, Bowling Green,OH 43403 USA

Keyword(s): concurrent validity; dynamic models; dynamic true score; latent curve analysis; latent trajectory; predictive validity; reliability; validity; GROWTH

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