Percentage of explained common varian... PreviousNext
Mplus Discussion > Exploratory Factor Analysis >
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 Meredith Thompson Knight posted on Monday, April 21, 2014 - 10:42 am
I have used EFA with geomin rotation on a sample of 319 respondents.

I am in a similar situation to many of the people who have posted on this thread. A reviewer has asked me for the percent of variance explained. I have reviewed every post, and I understand that % variance explained is a measure for PCA, not EFA, and that the goal of EFA is to reproduce the correlation matrix.

In doing some reading about summarizing and reporting EFA, I found a citation that suggests that the percentage of explained variance can serve as a means of assessing how much the correlation matrix is reproduced.

The citation can be found here:

Lorenzo-Seva, U. (2013). How to report the percentage of explained common variance in exploratory factor analysis. Technical Report. Department of Psychology, Universitat Rovira i Virgili, Tarragona.
Document available at: http://psico.fcep.urv.cat/utilitats/factor/

I have two questions:

1. Is reporting the percentage of explained common variance a reasonable way to summarize a oblique rotation? (In the working paper, Lorenzo-Seva uses Varimax)

2. Is there a way to calculate the percentage of explained common variance in MPlus?

Thanks for your help with this!

Meredith
 Linda K. Muthen posted on Tuesday, April 22, 2014 - 10:01 am
With an orthogonal rotation, you can sum the squared factors loadings and divide by the number of factor indicators. There is no option for this in Mplus.
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