Description, psychometrics, and normative data for an ajustable light beam apparatus for the assessment of size estimation accuracy are presented. Alpha coefficient and test-retest reliability indices are within desirable limits. Comparison of size estimation scores with affective measures of body satisfaction indicates strong discriminant validity. Normative data on 159 females indicates that subjects overestimate the size of their waist, hips and thighs; average overestimation is 21%. The need for further research is discussed.
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Thompson et al. (1988) studied this question.
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