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Methodology texts frequently emphasize the limitations of self-report measures. Empirical information on the validity of self-report data, however, tends to be limited to particular topics and populations. This paper examines the validity of self-report data in a sample of young adolescents for whom objective and self-report data were available on course grades, height, and weight. A comparison of the two kinds of data generally supported the validity of the self-reports, although there was some evidence of response effects. It was concluded that while young adolescents exhibit some systematic errors in reporting, self-reports can provide a useful substitute for some kinds of objective data.
Crockett et al. (Thu,) studied this question.