An introduction to the psych package: Part II Scale construction and psychometrics
نویسنده
چکیده
4 Item and scale analysis 9 4.1 Dimension reduction through factor analysis and cluster analysis . . . . . . 10 4.1.1 Minimum Residual Factor Analysis . . . . . . . . . . . . . . . . . . . 12 4.1.2 Principal Axis Factor Analysis . . . . . . . . . . . . . . . . . . . . . 13 4.1.3 Alpha Factor Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . 13 4.1.4 Weighted Least Squares Factor Analysis . . . . . . . . . . . . . . . . 16 4.1.5 Principal Components analysis (PCA) . . . . . . . . . . . . . . . . . 16 4.1.6 Hierarchical and bi-factor solutions . . . . . . . . . . . . . . . . . . . 16 4.1.7 Item Cluster Analysis: iclust . . . . . . . . . . . . . . . . . . . . . . 21 4.2 Estimates of fit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.3 Confidence intervals using bootstrapping techniques . . . . . . . . . . . . . 31 4.4 Comparing factor/component/cluster solutions . . . . . . . . . . . . . . . . 31 4.5 Determining the number of dimensions to extract. . . . . . . . . . . . . . . 33 4.5.1 Very Simple Structure . . . . . . . . . . . . . . . . . . . . . . . . . . 34 4.5.2 Parallel Analysis . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36 4.6 Factor extension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
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تاریخ انتشار 2017