Project Overview
- Status: COMPLETE
- 37 participating labs collected data in 18 countries on 5 continents
- 1018 babies tested
- 94 authors on Developmental Science publication
In this project we investigate a fundamental aspect of human nature: evaluating others’ actions as praiseworthy or blameworthy. We do so in a closely coordinated, multi-laboratory, standardized study aimed at replicating the helping/hindering finding reported by Hamlin, Wynn, & Bloom, 2007. Using a video-taped version of the original puppet show, labs from around the world are collecting data from infants between the ages of 5.5 and 10.5 months.
Links
- Project website: check it out
- Materials, Protocols, and Documentation: MB4-OSF
- Data and code: MB4-GitHub
- Listserv: join here
- Slack: MB workspace (join the #mb4-general channel)
Project Leads
- Kelsey Lucca, Arizona State University, United States [email]
- Francis Yuen, University of British Columbia, Canada [email]
- Kiley Hamlin, University of British Columbia, Canada [email]
MB4 Contributors
We encourage everyone who is interested in the project to contact the Project Leads (see above) or fill out the MB Sign-Up Form. Please note that access to infants/an infant lab is NOT a prerequisite.
NOTE: Default table ordering is by contributor’s first name. You can filter, group, and/or sort entries by any field.
Publication
Stage 1 Registered Report
Lucca, K.*, Yuen, F.*, Byers-Heinlein, K., Capelier-Mourguy, A., Cirelli, L. K., Ben, R. D., Frank, M. C., Henderson, A. M. E., Kominsky, J. F., Liberman, Z., Margoni, F., Reschke, P. J., Schlingloff, L., Scott, K., Soderstrom, M., Sommerville, J., Su, Y., Tatone, D., Uzefovsky, F., … Hamlin, J. K. (2025). Infants’ Social Evaluation of Helpers and Hinderers: A Large-Scale, Multi-Lab, Coordinated Replication Study. Developmental Science, 28(1). https://doi.org/10.1111/desc.13581. (*co-first authors) [PsyArXiv preprint]
To cite, use (Lucca, Yuen, et al., 2024)