UK College of Education


Quantitative and Psychometric Resources

Bifactor Indices Calculator – (Excel)

This tool calculates ancillary indices for bifactor models (e.g., ECV, IECV, PUC, Omega, OmegaH, Relative Omega, H, Absolute Relative Bias, FD).

How to cite this tool:

Dueber, D. M. (2016, December). Bifactor Indices Calculator: A Microsoft Excel-based tool to calculate various indices relevant to bifactor CFA models. Available at

How to create path diagrams in PowerPoint

This video shows you how to create a CFA path diagram in PowerPoint which could be used for presentations or possibly for publications.

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