Defining and predicting behavior -- Attitudes and their determinants -- Perceived norms and their determinants -- Perceived behavioral control and its determinants -- Attitudes, norms and control as predictors of intentions and behavior -- Background factors and origins of beliefs -- General attitudes and the prediction of behavior -- Challenges to the reasoned action approach -- Changing behavior : theoretical considerations --Changing behavior : sample interventions -- Appendix: Constructing a reasoned action questionnaire.