SPSS分析折半信度在教育研究之應用

Using SPSS Analyze Split-Half Reliability in Educational Researches

不少研究者提出折半信度係數，但是統計套裝軟體提供分析功能有限，統計專書討論亦少。本研究討論折半信度係數的理論與應用，提出分析負折半信度值、所有可能分半題項組合做法，兼及簡述Cronbach’s alpha等內部一致性信度。另設計SPSS分析程式，適用多類型分半資料方法，能處理所有可能分半題項組合資料，也說明如何應用這些程式。以實例資料考驗，顯示分析程式表現良好。

Several researchers proposed various split-half reliability coef¬ficients. But most statistics analysis software provided a few executive functions and statistical textbooks also introduced a few contents about split-half reliability. The study discussed some theory bases and appli¬cative themes about split-half reliability, proposed analytic methods for conducting negative split-half reliability coefficients and caculating all possible split-half item pairs as well as illustrated some internal consis¬tency reliability coefficients such as Cronbach’s alpha coeficient. More¬over, some programs based on SPSS operating enviroment were provided for analysis virous types of split-half item data that included all possible item composed groups. How to use these programs were also discussed. Testing by real data, these programs perform well.