本研究旨在針對資優生編製一份具信效度之休閒動機量表，並比較不同背景資優生在此工具上是否具有組間不變性。研究者乃根據理論以自編之量表對國中小資優生進行調查，採分層隨機與叢集取樣合併之抽樣方式，共獲得有效樣本1,059份，再依分析的需要將此樣本隨機分為三等分。先以第一組樣本作探索性因素分析和項目分析，再以第二組樣本進行結構方程模式之驗證性因素分析，然後使用第三組樣本做此一測量模式之複核效化，最後則採多群組分析進行逐漸嚴苛之多層次檢驗。結果顯示：本量表因素結構良好、具有建構效度，信度考驗也達到令人滿意的標準，且蒐集的資料適配提出的理論模式，而模式的穩定性也通過了最寬鬆至最嚴苛之統計考驗，另本研究也證實了測量工具對不同背景之資優生均具有測量的恆等性。

The purposes of this study were to construct a reliable and valid Leisure Motivation Scale for Gifted Students and to compare whether there were groups invariance for the different background gifted students in this scale.Based on theories, a self-designed scale for gifted students was used to survey gifted students of the junior high and elementary schools. 1,059 valid samples were collected by the stratified random sampling and cluster sampling. The samples were divided into three sets by a random procedure. First, the first sample set was analyzed by item analysis and exploratory factor analysis. Moreover, the second sample set was analyzed by confirmatory factor analysis of structure equation modeling and the cross-validation was tested by the third sample set. Finally, the different levels of strictness multi-groups analysis were proceeded.The results showed that the factors had great structures and there were construction validities in this scale. The reliabilities of the data were satisfactory, too. The collected data fitted to the theoretical model and this stability of model passed the statistical tests from loose to tight replication strategies. In this study, measurement invariance was confirmed for gifted students with different background, too.