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Related Experiment Video

Updated: Apr 20, 2026

Control of Eating Behavior Using a Novel Feedback System
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Creating a measure of portion control self-efficacy.

Lindsey C Fast1, Jennifer J Harman2, Julie A Maertens2

  • 1Department of Psychology, Western State Colorado University, Gunnison, CO, United States.

Eating Behaviors
|December 3, 2014
PubMed
Summary

A new scale measures portion control self-efficacy (PCSE), which is crucial for managing food intake and preventing weight gain. This reliable and valid tool aids in weight loss and health interventions.

Keywords:
Eating behaviorsFood consumptionHealth behaviorsObesityPortion control self-efficacyWeight loss

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Area of Science:

  • Behavioral Science
  • Nutrition Science
  • Psychology

Background:

  • Food portion sizes have increased significantly, exceeding dietary recommendations.
  • Individuals need to manage their food consumption effectively.
  • Understanding individual factors influencing food intake is essential.

Purpose of the Study:

  • To develop and validate a new measure of portion control self-efficacy (PCSE).

Main Methods:

  • Three studies were conducted to develop and validate the PCSE measure.
  • Cross-sectional surveys were used to assess test-retest reliability.
  • Construct and predictive validity were examined using the Food Amount Rating Scale (FARS).

Main Results:

  • The PCSE measure demonstrated good fit statistics and acceptable test-retest reliability.
  • The PCSE showed construct and predictive validity.
  • The measure was further validated with a sample of overweight and obese adults seeking weight loss.

Conclusions:

  • The developed PCSE measure is reliable and valid.
  • Inaccurate food portion estimation contributes to overeating and weight gain.
  • PCSE should be integrated into future research and interventions for weight management and health.