Studies examining college students' drug use behavior have found that drug use has increased over the periods studied. To examine the attitudes and behaviors towards drugs of University of Maryland freshmen over a decade, 410 freshmen in 1973 and 491 freshmen in l983 were administered an anonymous questionnaire. An analysis of the results showed that there was a significant decline, between 1973 and 1983, in incidence of use for 13 substances studied, except hard liquor, speed, heroin, and cocaine. There was also a decline in percent of regular use of most substances. For example, 33% regularly used marijuana in 1973, compared to 17% in 1983. Women were less likely than men to drink beer in 1973, but were more likely than men to smoke cigarettes and drink wine in 1983. Compared to 1973, 1983 students were more likely to feel that marijuana should not be legalized, and that someone found selling or using marijuana should be turned in to the proper authorities. Women were more likely than men to feel sorry for people on drugs and to be in favor of drug education programs. 1983 students were less supportive of drug education programs than 1973 students. (BL)