本研究乃整合理性行動論及社會學習理論中之自我效能探討本研究對象從事西式速食攝食行為之行為意圖。目的在瞭解本研究對象在理性行動論及自我效能各變項中的表現，藉以瞭解本研究對象對西式速食攝食行為的看法及其影響因素，並據以討論應用理性行動論及自我效能於本研究對象西式速食攝食之行為意圖的適切性。
本研究以臺北縣某國小六年級八十二學年度在學之學童為研究母群體，採簡單隨機集束抽樣法，共得273人為有效樣本，其中男生144人，女生129人。研究工具為研究者依據開放式引導問題卷所篩選出之顯著信念，自編而成的結構式問卷。採用集體施測方式，進行標準化解說後，學生自行填答。
本研究的重要結論如下：
一、對西式速食攝食的態度、主觀規範及自我效能可有效的解釋本研究對象的西式速食攝食行為意圖。態度及主觀規範愈正向，而自我效能愈負向，則愈會想去吃西式速食。
二、本研究對象對西式速食攝食的態度與行為信念及結果評價的交乘積和呈正相關；主觀規範也與規範信念及依從動機的交乘積和呈正相關。

The purpose of this study was to predict and explain the primary school students' intention to eat fast-food by implementing the theory of Reasoned Action and the self-efficacy concept of Bandura's social learning theory.
6 classes, 273 6th-grade students are ramdonly choosed from a selected primary school, among them 144 are male and 129 are female, as research samples.
The main findings of this study were:
1.the attitude toward eating fast-food, subjective norm and self-efficacy could effectively explain the subject's intention to eat fast-food.
2. the results of this study supports integrated theory originated from theh Reasoned Action and the self-efficacy concept of Brandura's social learning theory.