(introduction...)

According to the way in which drug education and prevention programmes are carried out, three kinds of effects can be distinguished:

First, the intended effects - after undertaking a drug education programme, fewer drugs are used, or people know more about their damaging effects.

Second, unintended or unwanted effects might occur, especially in high-key campaigns which have great impact on the public. A well-known unintended effect is the arousal of curiosity about drugs amongst youngsters although the opposite is intended. Another can be that, through the influence of a campaign, drug addicts find themselves even more socially isolated.

And, finally there are the unexpected effects. For example, since the start of the British antiheroin campaign, private fundraising activities for drug education projects have increased considerably 50)

50) See Note. 35

This Chapter will describe the results of evaluation studies carried out over the past 20 years. Firstly, drug education utilizing mass media will be evaluated, and secondly a number of evaluation studies undertaken to determine the effects of group and community drug education will be reviewed.