The purposes of this study were to investigate the validity and applicability of the Theory of Planned Behavior(Ajzen, 1991) and it's alternative model(Kim, 2002) to explain smoking and drinking behaviors. For the study of the smoking adults, 243 male...
The purposes of this study were to investigate the validity and applicability of the Theory of Planned Behavior(Ajzen, 1991) and it's alternative model(Kim, 2002) to explain smoking and drinking behaviors. For the study of the smoking adults, 243 male elementary school teachers were surveyed, while 319 male commercial high school students were surveyed for youth smoking research. For the study of female drinking behaviors, 211 housewives were surveyed. The data was analyzed through multiple regression analysis and structural equation model analysis for comparison and verification of two models. In the TPB, either attitude or subjective norm explained 21.0% and 36.1% of adult and youth smoking behavior intention, while 24.0% of female drinking behavior intention were explained by attitude. In the case of the alternative model, habit was included in adult smoking study and explained 36.5%. Either habit or opportunity were included in youth smoking and female drinking studies, and 60.2% and 72.3% could be explained. In the case of the TPB, behavior intention could explain 43.0% and 35.8% of adult and youth smoking, while 27.9% was explained by behavior intention and perceived behavior control in female drinking study. According to the alternative model, where habit was inclluded in adult and youth smoking study, 52.1% and 44.1% could be explained, while in female drinking study, only habit was a significant variant and It explained 49.5%. The alternative model explained 8.3% to 48.2% more in behavior intention and behavior, and it displayed more values in overall model correspondence index. This result implies advantages of alternative model in prediction of smoking and drinking behaviors compared to TPB. The last section of the thesis discussed the limits of the research and suggestions for the future study.