Causal Effect of Intergroup Contact on Exclusionary Attitudes
This page includes materials related to the experiment I conducted in 2012 on attitudes toward immigration by exploiting routenized behavior on commuter rail in the Boston area.
The article is here (2014, Proceedings of the National Academy of Sciences of the United States of America (111) 10, pp. 3699–3704.)
Here is the protocol for experimental confederates who were blind to the experiment's purpose. Confederates were fully debriefed after the experiment.
The replication data is here.