Desegregation and mainstreaming are both based on the assumption that the placement of minority and handicapped students in a classroom with majority and nonhandicapped students will facilitate positive relationships. The literature indicates that cooperation without intergroup competition promotes greater interpersonal attraction among both heterogeneous and homogeneous individuals than do interpersonal competition, individualistic efforts, and cooperation with intergroup competition. Cooperation with intergroup competition promotes greater interpersonal attraction than does interpersonal competition or individualistic efforts. There tends to be no significant difference between interpersonal competition and individualistic efforts in promoting interpersonal attraction among participants. (Author/JAC)