Interdependence and interpersonal attraction among heterogeneous and homogeneous individuals: A theoretical formulation and a meta-analysis of the research
D. W. Johnson, R. Johnson, G. Maruyama 1983 Review of Educational Research v53 p5-54
The study uses meta-analysis to summarize 100+ studies which, taken together, show that interpersonal attraction increases under cooperative conditions. The results of the meta-analysis indicate that cooperation without intergroup competition promotes more interpersonal attraction than cooperation with intergroup competition, interpersonal competition, or individualistic efforts. They also show that there is little difference between interpersonal competition and individualistic efforts in terms of generating interpersonal attraction.