This study assessed the community adjustment of 105 young adults (35 with mild mental retardation, 35 with moderate mental retardation, and 35 with severe/profound mental retardation). The data were analyzed with level of mental retardation serving as the independent variable and the following dependent variable measures: number of friends, variety of friends, recreation/leisure--social, recreation/leisure--community, recreation/leisure--home, income support, earned income, daytime activity, living arrangement, number of limiting factors, and number of support services. The hypothesis that no difference existed among level of mental retardation for the 11 dependent variables was rejected. Of 14 paired comparions conducted as follow-ups, seven were found to be statistically significant. The groups were differentiated on factors related to income, employment, and degree of independence in living arrangement. No significant differences across levels of retardation were found for social/network integration variables, and all groups appeared to participate at the same levels in social events outside of the home and in leisure activities within the home. (Includes 34 references.) (JDD)