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    J Consult Clin Psychol. 1991 Feb;59(1):27-37.

    Analysis of change: modeling individual growth.

    Source

    Department of Psychology, University of Houston, Texas 77204-5341.

    Abstract

    Research on change is complicated by problems of measurement and analysis stemming from a conceptualization of change as a series of accumulating increments and decrements. In contrast, individual growth curves depict change as a continuous process underlying individual performance. These two perspectives are reviewed, and some problems with the use of difference scores in the study of change are clarified. Traditional methods are contrasted with growth curve analysis for the purposes of measuring change and studying its correlates. An illustrative example of the use of growth curves is provided from research on recovery of cognitive function following pediatric closed head injury.

    PMID:
    2002140
    [PubMed - indexed for MEDLINE]

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