This document discusses an experiment to test whether material or experiential purchases make people happier. It explains that the experiment would randomly assign people to two groups, having one group write about an experiential purchase and the other group write about a material purchase. By ensuring the groups are alike in every way except for the different treatment, any differences in outcomes between the groups must be due to the different treatment of writing about an experience versus a material good. The document asks for any problems or questions about this proposed experiment.
