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Background <p>While many multi-item measures are available to evaluate an individual’s body image, study demands occasionally require the use of very brief measures, including single-items. However, little is known about how single-items perform relative to multi-item counterparts.</p> Methods <p>The present study aimed to evaluate the utility of two single-item assessments of appearance satisfaction, i.e. an individual’s evaluation of their appearance, using a four-step and seven-step Likert scale and drawing on secondary data from three studies: (1) the Avon Longitudinal Study of Parents and Children (ALSPAC) (<i>N</i> = 5,952, aged 14), (2) a cross-sectional study of older adolescents primarily with probable eating disorder diagnoses (the STORY study) (<i>N</i> = 242, aged 16–25), (3) and a longitudinal study of emergent adults (the COVID study) (<i>N</i> = 201 participants aged 18–30). Thus, the present study aimed to examine the concurrent validity (Body Dissatisfaction Scale, children’s mother-reported body dissatisfaction, Body Esteem Scale for Adolescents and Adults – Appearance Subscale), convergent validity (Eating Disorder Examination Questionnaire, Eating Disorder-15, the Patient Health Questionnaire version 4 and 8), and test-retest reliability of single items measuring appearance satisfaction.</p> Results <p>In study 1, the single-item measure showed good concurrent validity with the Body Dissatisfaction Scale for both boys and girls, and moderate concurrent validity with mother-reported body dissatisfaction for girls only. In study 2, acceptable – yet lower – convergent validity was established in a female population with probable eating disorders, and strong convergent and concurrent validity in a small healthy control population. In study 3, strong significant convergent and concurrent validity were established for the implemented single-item assessment in emerging adults with and without a self-reported eating disorder diagnosis, as well as acceptable test-retest reliability.</p> Conclusion <p>These results provide insights into the utility of two highly similar single-item assessments of appearance satisfaction and give preliminary support for the use of similar measures in research (specifically for female non-eating disorder populations) when necessary.</p>

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Is one item enough? Testing the potential utility of single-item assessments of appearance satisfaction across three studies

  • 期刊论文

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  • 发表日期：

    2025年11月23日

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  • Marie-Christine Opitz,
  • Niamh Savage,
  • Katie Talbot,
  • Nora Trompeter,
  • Sarah Moody,
  • Nadia Micali,
  • Ulrike Schmidt,
  • Helen Sharpe

摘要

Background

While many multi-item measures are available to evaluate an individual’s body image, study demands occasionally require the use of very brief measures, including single-items. However, little is known about how single-items perform relative to multi-item counterparts.

Methods

The present study aimed to evaluate the utility of two single-item assessments of appearance satisfaction, i.e. an individual’s evaluation of their appearance, using a four-step and seven-step Likert scale and drawing on secondary data from three studies: (1) the Avon Longitudinal Study of Parents and Children (ALSPAC) (N = 5,952, aged 14), (2) a cross-sectional study of older adolescents primarily with probable eating disorder diagnoses (the STORY study) (N = 242, aged 16–25), (3) and a longitudinal study of emergent adults (the COVID study) (N = 201 participants aged 18–30). Thus, the present study aimed to examine the concurrent validity (Body Dissatisfaction Scale, children’s mother-reported body dissatisfaction, Body Esteem Scale for Adolescents and Adults – Appearance Subscale), convergent validity (Eating Disorder Examination Questionnaire, Eating Disorder-15, the Patient Health Questionnaire version 4 and 8), and test-retest reliability of single items measuring appearance satisfaction.

Results

In study 1, the single-item measure showed good concurrent validity with the Body Dissatisfaction Scale for both boys and girls, and moderate concurrent validity with mother-reported body dissatisfaction for girls only. In study 2, acceptable – yet lower – convergent validity was established in a female population with probable eating disorders, and strong convergent and concurrent validity in a small healthy control population. In study 3, strong significant convergent and concurrent validity were established for the implemented single-item assessment in emerging adults with and without a self-reported eating disorder diagnosis, as well as acceptable test-retest reliability.

Conclusion

These results provide insights into the utility of two highly similar single-item assessments of appearance satisfaction and give preliminary support for the use of similar measures in research (specifically for female non-eating disorder populations) when necessary.