Prejudice Reduction Evidence Database

The central database of experimental literature reporting prejudice reduction interventions and outcomes. 

Search Publications

How to Use Database

There are three ways to navigate the database: browse all publications, advanced filters, or by keyword search. Click here to learn more about each method.

Submit an article

We are currently accepting published articles, preprints, working papers, reports, dissertations, and theses for inclusion in the database. 


To be included in this database, a study needs to:

  • Clearly use random assignment to allocate participants or groups to experimental conditions. 
  • Study prejudice as an outcome (defined as animus or negative bias toward social groups and their putative members).
  • Contain an intervention aimed at reducing prejudice or increasing tolerance.

The following studies are outside of the scope of this database: 

  • Studies on gender-based prejudice, with the exception of prejudice toward transgender and genderqueer people
  • Studies of prejudice that have not traditionally been categorized as prejudice, such as inter-university rivalries and inter-partisan bias.
  • Studies that focus on the effects of prejudice on its targets.
  • Studies whose outcomes are focused solely on policy outcomes to the exclusion of any psychological or behavioral outcomes.


Welcome to the Prejudice Reduction Evidence Database
May 22, 2023

 A new resource that seeks to collect research literature describing the experimental results of prejudice reduction interventions. 

203 articles added from 2009 review
May 19, 2023

203 papers have been added from the 2009 review by Betsy Levy Paluck and Donald Green. 

Paluck, E. L., & Green, D. P. (2009). Prejudice reduction: what works? A review and assessment of research and practice. Annual Review of Psychology, 60, 339–367.

Washington Post: Does diversity training work? We don’t know — and here is why.
Feb. 2, 2023

Betsy Levy Paluck, Advisory Board member and professor of Psychology and Public Policy at Princeton has written an opinion piece for the Washington Post which cites the…

309 articles added from 2021 meta-analysis
July 20, 2022

309 articles have been added to the database from the 2021 meta-analysis, 'Prejudice Reduction: Progress and Challenges.'

Betsy Levy Paluck speaks about new meta-analysis results at Wharton
Feb. 26, 2022

Dr. Paluck speaks at Wharton about the results of the 2021 meta-analysis of prejudice reduction literature.