Drug use among college students in the United States was particularly heavy during the 1970s. Reporting on a study of drinking and drug use among college students in the United States in 1994, a Newsweek reporter wrote: Why should college students be so impervious to the lesson of the morning after? Efforts to discourage them from using drugs actually did work. The proportion of college students who smoked mari­juana at least once in 30 days went from one in three in 1980 to one in seven last year [1993]; cocaine users dropped from 7 percent to 0.7 percent over the same period. (19 December 1994, p. 72) Do you agree with the statement that “efforts to discourage them from using drugs actually did work”? Explain your reasoning.