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Related Experiment Video

Updated: Feb 2, 2026

Assessing the Coherence of Parents' Short Narratives Regarding their Child Using the Five-Minute Speech Sample Procedure
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Child BMI Over Time and Parent-Perceived Overweight.

Melissa Wake1,2,3, Jessica A Kerr4,2, Pauline W Jansen4,5,6

  • 1Murdoch Children's Research Institute, The Royal Children's Hospital, Parkville, Victoria, Australia; melissa.wake@mcri.edu.au.

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Parental perception of child overweight is strongly influenced by the child's actual body mass index (BMI) z-score. While parental awareness of overweight may precede slight BMI increases, it does not significantly impact weight status.

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Area of Science:

  • Pediatric Health
  • Obesity Research
  • Developmental Psychology

Background:

  • Parental perception of childhood overweight is often inaccurate.
  • Accurate perception is traditionally seen as crucial for reducing child obesity.
  • Emerging research questions whether this perception change promotes weight gain.

Purpose of the Study:

  • To investigate the temporal relationship between child adiposity and parental perception of overweight.
  • To determine the directionality of influence between BMI z-scores and perceived overweight status over time.

Main Methods:

  • Utilized data from two cohorts of the Longitudinal Study of Australian Children.
  • Employed cross-lagged regression models to analyze repeated measures of BMI z-scores and parental perceptions.
  • Included large sample sizes with multiple waves of data collection across childhood and adolescence.

Main Results:

  • Higher child BMI z-scores strongly predicted subsequent parental perception of overweight.
  • The influence of BMI z-score on perception was significantly larger (3-12 times) than the reverse.
  • Parental perception of overweight weakly preceded increases, but not decreases, in BMI z-scores.

Conclusions:

  • Child's BMI status is a primary driver of parental perception of overweight.
  • Parental awareness initiatives may have limited impact on improving children's BMI.
  • Interventions should consider the strong influence of actual adiposity on parental perception.