本研究主要目的在探討有學業上拖延習慣的大學生之「防禦性悲觀」、「主動性拖延」、「自我設限」、「因應策略」對「幸福感」影響之探討。依此目的，本研究先探討不同背景變項的大學生在「防禦性悲觀」、「主動性拖延」、「自我設限」、「因應策略」及「幸福感」的差異情形，並建構「防禦性悲觀、主動性拖延、自我設限、因應策略對幸福感影響」之模式。研究採問卷調查法，以台灣15所大學922位有拖延習慣的大學生為對象。並以隨機方式將之分為兩組，用以驗證模式及探究不同背景變項的受試在各研究變項上的差異。研究工具包括防禦性悲觀量表、主動性拖延量表、自我設限量表、因應策略量表、及幸福感量表。資料分析方法為因素分析、信度分析、t考驗、單因子變異數分析及結構方程模式。 / 本研究以第一組樣本探討初始模式與觀察資料間的適配情形，並依據修正指標及相關理論進行模式修正，修正後的模式與資料適配後，再以第二組樣本驗證模式的穩定性，經驗證後模式具相當穩定性。 　　主要研究結果如下： 一、在背景變項方面：(一)不同性別有拖延習慣的大學生在「防禦性悲觀」、「自我設限」及「幸福感」等方面都有顯著差異。(二)不同年級有拖延習慣的大學生在「主動性拖延」及「幸福感」等方面都有顯著差異。 二、在模式方面：（一）防禦性悲觀對幸福感有負向直接效果；(二) 主動性拖延對自我設限有正向直接效果；（三）自我設限對因應策略有負向直接效果；(四) 自我設限對幸福感有正向直接效果；（五）因應策略對幸福感有正向直接效果。(六)主動性拖延經由自我設限及因應策略的中介影響而對幸福感有正向效果。 　　最後，根據研究結果，針對個人、學校輔導單位及未來相關研究提出建議，以供參考。 / The main purpose of this research was to study the relationships among Defensive-pessimism, Active-procrastination, Self-handicapping, Coping-strategy and Well-being of college student who had the habit of procrastination. The researcher first investigated the differences in terms of “Defensive-pessimism”, “Active-procrastination”, “Self-handicapping”, “Coping-strategy” and “Well-being” among the participants who had the different background variables, also studied the relationships among Defensive-pessimism, Active-procrastination, Self-handicapping, Coping-strategy and Well-being of college students who had the habit of procrastination by using the model of “The relationships among Defensive-pessimism, Active-procrastination, Self-handicapping, Coping-strategy and Well-being.” The study employed five questionnaires to collect data . The participants of the study were 922 Taiwan college students who had the habit of academic procrastination from 15 universities, and were randomly divided into two groups, to test model and study the differences in regards of different research variables among the participants who had the different background variables. The participants were evaluated by Defensive-pessimism scale, Active-procrastination scale, Self-handicapping scale, Coping-strategy scale, and Well-being scale. The data were analyzed by factor analysis, Cronbach α analysis, t-test，one-way ANOVA and SEM. / The initial models tested by group one did not fit well with the observed data. Therefore, applying the modification index and the theories, the researcher modified the model till the model fit the observed data, then tested the models’ stability by group two, and came to confirm the stability of model. The researcher found the model fit the observed data, and could effectively explain the relationships among the variables. The main results of this study were as follows: First, about the background variables: 1.The scores of “defensive-pessimism”, “self-handicapping”, and “well-being” had the differences between boys and girls. 2. The scores of “active-procrastination” and “well-being” had the differences between difference grades. Second, about the model: 1. Defensive-pessimism could directly negative affect well-being. 2. Active-procrastination could directly affect self-handicapping. 3. Self-handicapping could directly negative affect coping-strategy. 4. Self-handicapping could directly affect well-being. 5. Coping-strategy could directly affect well-being. 6. Active-procrastination could through the self-handicapping and coping-strategy to affect he well-being. Finally, based on the results of the study, the researcher made some further suggestions for individuals, school counseling and future researchers.

刻板印象威脅效果是指當個人在面臨與其能力有關的負向刻板印象時，會有測驗表現不佳的現象，由於國內尚未有刻板印象威脅的相關研究出現，過去相關的刻板印象威脅研究對自我設限策略也少有探究，對於使用自我設限策略後是否讓自己表現不佳的風險更高亦少探討。因此，本研究除了探究個人在威脅情境中的「測驗表現」外，他（她）在情境中的「自我設限策略」之因應行為、及其自我設限策略的使用對測驗表現的影響亦是本研究關注的議題。 本研究為3(刻板印象威脅：威脅組女性、無威脅組女性、威脅組男性)×4(自我設限線索：宣稱組、行為組、宣稱行為組、以及不告知組)的實驗設計。其中，在刻板印象威脅部分，威脅組受試被告知「男性在此測驗中的表現比較好」，無威脅組受試被告知「男、女性的數學表現無差異」。在設限線索部分，宣稱組受試被告知「宣稱性自我設限對測驗表現有負向影響」，行為組受試被告知「行為性自我設限線索對測驗表現有負向影響」，宣稱行為組受試被告知「宣稱性與行為性自我設限皆對測驗表現有負向影響」。主要依變項有三：數學測驗分數、練習題的答題數目（行為性自我設限之指標）、宣稱性自我設限問卷分數（宣稱性自我設限之指標）。研究對象採用國立政治大學的大學女生158名與男生75名。 研究結果發現，不論設限線索的有效與否，處於威脅情境中的女性受試幾乎都比較傾向使用「宣稱性自我設限策略」以進行因應，其測驗表現也較差。另外，在威脅情境中，自尊越低的女性受試越傾向使用「宣稱性自我設限策略」。但不同「刻板印象威脅」組別的受試在測驗表現上無差異，亦即刻板印象威脅效果的現象並未在本研究獲得驗證，而各組在「行為性自我設限」的使用上亦無顯著差異。最後，研究者針對上述結果進行討論，並對本研究的限制與對未來研究的建議提出說明。

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