Abstract
Field surveys to test mass-reach intervention techniques, and population surveys to examine theoretically derived questions about the dynamics of smoking cessation and relapse, are key components of the range of research and development activities which should characterize a public-health approach to smoking cessation. This paper contrasts the conditions required for maximizing generality and validity in research in field settings, and the advantages and disadvantages of face-to-face and mass-reach intervention media. Recent studies of self-instructional cessation methods are described, and some ideal characteristics of soundly based intervention research in field settings are outlined. The use of a population survey togather theoretically relevant information on smoking behaviour, relapse and preferences for cessation services is also described. These examples suggest some ways in which intervention trials and behavioral epidemiology research may be used to improve the knowledge base for more effective mass-reach approaches to smoking cessation.

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