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Multidisciplinary Approach to Obesity Management: A Case Report

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Published on: May 30, 2025

Integrating cognitive dissonance and social consensus to reduce weight stigma.

Tomas Meaney¹, Elizabeth Rieger¹

¹Research School of Psychology, Australian National University, Canberra, Australia.

|March 1, 2021

Summary

Cognitive dissonance interventions effectively reduce weight stigma among university students. Blending cognitive dissonance with social consensus further improved affective reactions for those with higher in-group identification.

Keywords:

Cognitive dissonance In-Group identification Social consensus Weight stigma

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Area of Science:

Social Psychology
Health Psychology
Stigma Research

Background:

Weight stigma is widespread and causes significant harm.
Cognitive dissonance and social consensus are promising strategies for stigma reduction.

Purpose of the Study:

To test the effectiveness of a blended cognitive dissonance and social consensus intervention for reducing weight stigma.
To examine the impact of cognitive dissonance on various weight stigma measures.

Main Methods:

University students (N=98, aged 18-35) were randomly assigned to four conditions: blended cognitive dissonance, standard cognitive dissonance, blended control, or standard control.
Stigma was measured using perceived characteristics, affective reactions, social avoidance, blameworthiness, and general weight stigma scales.

Main Results:

Participants in cognitive dissonance conditions reported significantly lower weight stigma compared to control groups.
The blended cognitive dissonance approach showed reduced negative affective reactions in individuals with higher in-group identification.

Conclusions:

Cognitive dissonance is a validated method for decreasing weight stigma.
An integrated approach combining cognitive dissonance and social consensus shows potential for stigma reduction, particularly with strong in-group identification.