Intrinsic values (intimacy, personal growth, community) and extrinsic values (money, beauty, popularity; Kasser & Ryan 1993; 1996) have been linked with the way human groups naturally form (Sheldon, Sheldon, and Obaldiston, 2000). Specifically, people with similar values tend to
affiliate more with each other than people with dissimilar values affiliate with eachother. My study will explore the degree to which the relationship between intrinsic/extrinsic values and group
formation is a function of time. It will also examine the ability of people with intrinsic values to exclude people with extrinsic values.