年輕機車駕駛超速行為分析：習慣與計畫行為模式

Investigating Speeding Behaviors in Young Novice Motorcyclists: Habitual and Planned Behaviors

本研究提出結合習慣與計畫行為之超速行為理論架構，體現反應式與直覺式之風險行為決策歷程。異於過去研究大多以過去行為頻率作為習慣之衡量指標，本研究採用多面向自我報告習慣指標衡量超速習慣。本研究蒐集241筆有效樣本，透過信效度分析與結構方程模式驗證所提之習慣與計畫雙歷程理論架構。分析結果發現，本研究所提之超速習慣自我報告指標具有良好之信度，且對超速傾向具有顯著之解釋能力。計畫行為理論之態度因子具有二階之架構，包含認知以及情感態度等次因子，對超速傾向的影響最大。習慣為重要中介因素，當年輕機車駕駛對超速行為有正向態度、利於超速的主觀規範感受以及強烈的知覺行為控制，會促使超速習慣的養成，進而增強超速傾向。

To reflect responsive and intuitive decision processes, this study proposes a mixed decision framework containing both habitual and planned decision mechanisms. Moreover, this study proposes a multidimensional self-report habit index, instead of frequency of past behaviors used in past studies, to measure the habitual strength of speeding behaviors. A cohort of 241 undergraduate students in the northern Taiwan was recruited in the study. Structural equation modeling was adopted to examine the proposed structure. The analytic results show that the proposed habit index demonstrated satisfactory reliability and exhibited a significant relationship with speeding intention. Attitude of the Theory of Planned Behavior (TPB) presented a second-order structure, comprising cognitive attitude, affective attitude, and anticipated positive / negative affective reactions; the attitude factor also showed the most influence on speeding intention. Habitual strength showed a significant mediating effect between various factors and speeding intention; when motorcyclists have a stronger positive attitude, subjective norms, and perceived behavioral control towards speeding, their intention to speeding is stronger.