The major purpose of this study was to explore the differences between a group of 56 undergraduates who occupied single rooms and 57 undergraduates who occupied double rooms in the Gonzaga University Residence Hall System during the 1972-1973 academic year. The differences were evaluated according to one cognitive variable, grade-point average; two demographic variables, age and family size; and 16 non-cognitive variables. The 16 non-cognitive variables were evaluated according to the 15 need scales and counseling readiness scales of Gough's Adjective Checklist. The 15 scales included achievement, dominance, endurance, order, intraception, nurturance, affiliation, heterosexuality, exhibition, autonomy, aggression, change, succorance, abasement, and deference. Significance was found two variables, the demographic variable, age; and the cognitive variable, cumulative grade-point average. Thus, the undergraduate who lived in a private room, in contrast to the undergraduate who lived in a double room, was apparently older and maintained a higher cumulative grade-point average. Results of a question which ascertained undergraduates' preference for either living with or without a roommate indicated 45 of 56 undergraduates who lived in a private room and 28 of 57 undergraduates who lived in a double room would prefer to live without a roommate during the 1973-1974 academic year. (Author)