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Related Experiment Video

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Errors as a Means of Reducing Impulsive Food Choice

Errors as a Means of Reducing Impulsive Food Choice

Published on: June 5, 2016

Matching effects on eating. Individual differences do make a difference!

Thomas A Brunner¹

¹ETH Zurich, Institute for Environmental Decisions (IED), Consumer Behavior, Universitaetstrasse 22, CHN H 75.3, CH-8092 Zurich, Switzerland. tbrunner@ethz.ch

|December 21, 2011

Summary

This summary is machine-generated.

Highly expressive individuals synchronize eating behaviors, matching food intake more closely in social dyads. This personality trait influences shared consumption patterns, unlike less expressive participants.

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Area of Science:

Social Psychology
Behavioral Science
Personality Psychology

Background:

Social synchrony influences various interpersonal behaviors.
Consumption patterns can be influenced by social contexts.
The role of personality in shared eating behaviors is under-explored.

Purpose of the Study:

To investigate the influence of nonverbal expressiveness on food intake matching within dyads.
To determine if personality traits predict synchronized consumption behavior.
To explore the relationship between individual expressiveness and dyadic food intake.

Main Methods:

82 unacquainted female dyads participated.
Participants watched a cartoon while consuming salty snacks.
Nonverbal expressiveness was measured using the Affective Communication Test.
Intraclass correlation coefficients were computed to analyze food intake matching.

Main Results:

High food intake matching was observed in dyads with two highly expressive individuals.
Moderate matching occurred when one participant was highly expressive.
No significant matching behavior was found for dyads with two unexpressive individuals.

Conclusions:

High nonverbal expressiveness facilitates social synchronization and matching consumption behavior.
Personality, specifically expressiveness, significantly influences dyadic food intake.
This study provides the first evidence linking personality traits to synchronized eating.