Health Education Research Advance Access originally published online on February 8, 2005
Health Education Research 2005 20(5):527-539; doi:10.1093/her/cyh014
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Working mechanisms of computer-tailored health education: evidence from smoking cessation
1 Social and Organizational Psychology, University of Groningen, Grote Kruisstraat 2/1, 9712 TS Groningen, The Netherlands
2 Correspondence to: A. Dijkstra; E-mail: a.dijkstra{at}ppsw.rug.nl
To further develop tailored interventions, their working mechanisms must be identified. In the present study, three tailored messages that each contained one potential working mechanismpersonalization, adaptation or feedbackwere compared with a standard information condition. Two hundred and two students who smoked tobacco daily were randomly divided over four conditions. After the computer pre-test questionnaire, they read the information in their condition and filled in the immediate post-test. After 4 months, they were sent a follow-up questionnaire assessing their quitting activity. The data show that personalization (44.5%) and feedback (48.7%), but not adaptation (28.6%), led to significantly more quitting activity after 4 months than did the standard information (22.9%). Moreover, the effect of condition on quitting activity was completely mediated by individuals' evaluations of the tailoring.
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