計劃行為理論各成份量表之設計、發展與建立－以青少年無照騎車行為之研究為例

Designing, Developing, and Accomplishing the Scales from the Theory of Planned Behavior-Illustration of its Application to the Adolescent Motorcyclists without License

計劃行為理論過去曾成功的應用在健康、社會與學習行為上。然而，卻很少去探討此理論所編製出來之各成分量表在測量理論基礎上之問題。由於此理論對於量表設計與計分方式都很明確，使得研究者容易忽略這些量表之測量理論基礎。因此，有鑒於今天國內有很多學者紛紛應用此理論來探討各種社會與健康行為之際，實有必要去發展並建立這些量表的測量理論基礎，以提供他們在應用此理論於實際問題探討時之參考。

The theory of planned behavior was successful in the application of understanding and predicting health， social and learning behaviors， but its psychometric foundation was seldom concerned. It was much so obvious for both the scale design and the scoring system that most researchers easily ignored its psychometric characteristics. Hence， it is absolutely necessary for those future applied researchers to develop and accomplish those scales based upon the theory， and it is the main purpose of this study. Those scales were designed on this theory， the standardized procedures were developed for those scales， and those psychometric characteristics were established for those scales by taking full advantage of the application of this theory to predict the behavior in the adolescent motorcyclists without license. It was found that highly reliable and valid scales were designed， developed， and accomplished exactly when the standardized procedures upon this theory were followed， the open-ended questionnaire was utilized， and the pretest was administered later. However， from the viewpoint of the psychometric foundation， those scales based upon the theory were multidimensional except the behavioral intention scale. Again， the predictive validity was higher when the perceived behavioral control beyond the influence of the past behavior played an important role in the behavior with incomplete volitional control than not.