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    Nurs Res. 2008 May-Jun;57(3):182-90.

    The identity impairment model: a longitudinal study of self-schemas as predictors of disordered eating behaviors.

    Source

    School of Nursing, University of Michigan, Ann Arbor, MI 48109, USA. kfarchau@umich.edu

    Abstract

    BACKGROUND:

    There is broad consensus that the eating disorders of anorexia nervosa and bulimia nervosa stem from fundamental disturbances in identity development, but theoretically based empirical support is lacking.

    OBJECTIVE:

    To extend work on the identity impairment model by investigating the relationship between organizational properties of the self-concept and change in disordered eating behaviors (DEB) in an at-risk sample of college women transitioning between freshman and sophomore years.

    METHODS:

    The number, valence, and organization of self-schemas; availability of a fat body weight self-schema; and DEB were measured at baseline in the freshman year and 6 and 12 months later in a community-based sample of college women engaged in subthreshold DEB (n = 77; control: n = 41). Repeated-measures analyses of variances were used to examine group differences, and hierarchical regression analyses were used to predict disordered eating behaviors.

    RESULTS:

    Women in the DEB group had more negative self-schemas at baseline and showed information-processing evidence of a fat self-schema compared with the controls. The groups did not differ in the number of positive self-schemas or interrelatedness. The number of negative self-schemas predicted increases in the level of DEB at 6- and 12-month follow-up, and these effects were mediated through the fat self-schema. The number of positive self-schemas predicted the fat self-schema score but was not predictive of increases in DEB. Interrelatedness of the self-concept was not a significant predictor in this model.

    DISCUSSION:

    Impairments in overall collection of identities are predictive of the availability in memory of a fat self-schema, which in turn is predictive of increases in DEB during the transition to college in a sample of women at risk for an eating disorder. Therefore, organizational properties of the self-concept may be an important focus for effective primary and secondary prevention.

    PMID:
    18496104
    [PubMed - indexed for MEDLINE]
    PMCID: PMC3131796
    Free PMC Article

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