Re: [R] Confirmatory factor analysis using the sem package. TLI CFI and RMSEA absent from model summary.

University of Derby Kedleston Road Derby DE22 1GB k.che...@derby.ac.uk<mailto:k.che...@derby.ac.uk> 01332592081 http://derby.academia.edu/KevinCheung -Original Message- From: John Fox [mailto:j...@mcmaster.ca] Sent: 18 March 2013 15:55 To: Kevin Cheung Cc: r-help@r-project.org Subje

[R] Confirmatory factor analysis using the sem package. TLI CFI and RMSEA absent from model summary.

Hi R-help, I am using the sem package to run confirmatory factor analysis (cfa) on some questionnaire data collected from 307 participants. I have been running R-2.15.3 in Windows in conjunction with R studio. The model I am using was developed from exploratory factor analysis of a separate dat

Re: [R] Error messages when attempting to calculate polychoric correlation matrices using the psych package

use my data is on a six-point Likert and this is too many ordered steps for the polychoric function in psych. Kind regards, Kevin Kevin Yet Fong Cheung, Bsc., MRes., MBPsS. Postgraduate Researcher Centre for Psychological Research University of Derby Kedleston Road Derby DE22 1GB k.che...@derby.

[R] Error messages when attempting to calculate polychoric correlation matrices

Dear R users, I am a psychology postgraduate student who is relatively new to using R. I am currently developing a psychometric scale and have run into a few problems when using R to calculate a polychoric correlation matrix for my dataset. I am trying to produce a polychoric correlation matrix