R: Example data set from Gorsuch (1997) for an example factor...

Gorsuch {psych} | R Documentation

## Example data set from Gorsuch (1997) for an example factor extension.

### Description

Gorsuch (1997) suggests an alternative to the classic Dwyer (1937) factor extension technique. This data set is taken from that article. Useful for comparing `link{fa.extension}` with and without the correct=TRUE option.

### Usage

    data(Gorsuch)

### Details

Gorsuc (1997) suggested an alternative model for factor extension. His method is appropriate for the case of repeated variables. This is handled in `link{fa.extension}` with correct=FALSE

### Source

Richard L. Gorsuch (1997) New Procedure for Extension Analysis in Exploratory Factor Analysis. Educational and Psychological Measurement, 57, 725-740.

### References

Dwyer, Paul S. (1937), The determination of the factor loadings of a given test from the known factor loadings of other tests. Psychometrika, 3, 173-178

### Examples

    data(Gorsuch)

    Ro <- Gorsuch[1:6,1:6]
    Roe <- Gorsuch[1:6,7:10]
    fo <- fa(Ro,2,rotate="none")
    fa.extension(Roe,fo,correct=FALSE)

[Package psych version 1.7.8 Index]