Interventions to reduce implicit weight bias: A focus on mechanisms and individual differences

Area of Science:

• Social Psychology
• Clinical Psychology
• Public Health

Background:

• Implicit weight bias is widespread and difficult to reduce.
• Previous interventions have shown limited success.
• Recent research suggests interventions effective for racial bias may work for weight bias.

Purpose of the Study:

• To test the efficacy of five online interventions in reducing implicit weight bias.
• To explore individual differences in intervention response.
• To extend previous findings on modifying weight bias.

Main Methods:

• 1,305 adult participants completed a Weight Implicit Association Test (WIAT) pre- and post-intervention.
• Participants were assigned to one of five online interventions or a control group.
• An inductive, data-driven approach assessed individual differences in bias reduction.

Main Results:

• Four of the five interventions significantly reduced implicit weight bias compared to the control.
• Intervention effectiveness varied based on individual characteristics, suggesting optimal matching is important.
• The findings support the efficacy of interventions targeting social cognitive mechanisms of bias.

Conclusions:

• Online interventions can effectively reduce implicit weight bias.
• Personalized intervention matching may enhance outcomes.
• Further research is needed on moderators of intervention effectiveness.