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Can Adults Accurately Judge Child Weight Status?

Bethany J Ridley1, Kristofor McCarty1, Robin S S Kramer2

  • 1Department of Psychology, Northumbria University, Newcastle upon Tyne NE1 8ST, UK.

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Summary

Perceptions of child weight categories in the National Child Measurement Programme (NCMP) differ from medical criteria. This study found that people underestimate higher weights and overestimate lower weights, with terminology changes having limited impact.

Keywords:
BMI categorieschildhood weightoverweightparents

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Area of Science:

  • Child Health
  • Obesity Research
  • Perception Studies

Background:

  • The National Child Measurement Programme (NCMP) categorizes child weight status.
  • Understanding public perception of these categories is crucial for effective public health initiatives.

Purpose of the Study:

  • To determine perceived boundaries of NCMP weight categories for 4-5 and 10-11 year olds.
  • To assess if positive action terminology influences these perceptions.
  • To validate perceived boundaries against established criteria.

Main Methods:

  • Utilized photorealistic 3D child scans (n=388) in a method of adjustment task.
  • Recruited participants to estimate category boundaries and exemplars.
  • Tested the effect of alternative terminology on boundary perception.

Main Results:

  • Confirmed validity of perceived boundaries.
  • Observed a compressed response range: overestimation of lower weights and underestimation of higher weights.
  • Alternative terminology shifted boundaries upward but did not eliminate the response compression.

Conclusions:

  • A significant discrepancy exists between public perception of child weight categories and professional medical standards.
  • Bridging this gap likely requires targeted training on recognizing medically defined categories.