Repression and control have been shown to be inadequate for drug addiction issues. Recent history, however, has proved that information is one of the most effective measures against the spread of drugs. The wide range of drug circulation and the need for the spread of correct information on the effects of drugs in man, especially his brain, have led the Center for Scientific Culture Diffusion of Cassino University, to widen the scope of ?Alter Ego. Drugs and the brain?, a touring educational exhibition, which opened in 1994, by dedicating more attention to socially accepted drugs, such as alcohol and tobacco, and to new substances like ecstasy and similar drugs. Concurrently with the Alter Ego touring exhibition, a study was undertaken to obtain information on public awareness of the dangers of psychotropic drug abuse and to assess the effectiveness of the exhibition as an instrument of scientific information about drug addiction among its visitors, during its tour of over 60 Italian towns.