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Role and development of smoking prevention programmes in school.

In health education the primary issue lies very often in the so-called delayed learning: the effects of stimuli do not appear immediately after they have been given, they can appear after a long period of time, even years. If learning is understood as a life-long process, which is characterized by underpredictability of a certain level and by the fact that things learned cannot always be indicated by present research methods, the discussion on teaching and learning in school might change to a fairly great extent.