Step 3: Construct validity testing to verify directly the structure with Exploratory Factor Analysis (EFA) Analysis and Confirmatory Factor Analysis (CFA) which is part of the equation to model the structures (structural Equation Modeling: SEM) concept in bringing a quality analysis of the CFA used psychological measurement tools to determine the structural. Estimation accuracy and validation does not alter the structural element when applied to different groups. Sample testing of students in higher education in Chiang Mai all 313 series by splitting used for analysis and for analyzing the number of EFA set 163 150 CFA allow a number of query batch 26 Cronbach alpha value question text which has the structure poprakop 0.913 with 5 different factors without transaction costs.Into the cell and showing that the query can be applied to both domains. Afterward, confirming that the factor derived from the linear factor analysis confirm the EFA (Confirmatory Factor Analysis: CFA) used by the data set with 150 questions 5, making the remaining 21 questions provided the most appropriate model by comparing the results of the 3 models, including models that do not include a factor (the Null model) a model 1 (model 1-factor) and the factor model 5 (model 5-factors), factor, as shown in table 2.
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