joreskog: Obtain Jöreskog's congeneric reliability (Unidimensional CFA...
In eunscho/reliacoef: Compute and Compare Unidimensional and Multidimensional Reliability Coefficients

joreskog

R Documentation

Obtain Jöreskog's congeneric reliability (Unidimensional CFA reliability)

Description

Congeneric reliability is a reliability coefficient derived from unidimensional confirmatory factor analysis (CFA).

Usage

joreskog(x, nonneg_loading = FALSE, print = TRUE)

Arguments

`x`	a dataframe or a matrix (unidimensional)
`nonneg_loading`	if TRUE, constraint loadings to nonnegative values
`print`	If TRUE, the result is printed to the screen.

Details

Features: Congeneric reliability is a unidimensional reliability coefficient based on a unidimensional confirmatory factor analysis (CFA) model.

Name: Congeneric reliability is called by a variety of names, general users usually call it composite reliability, and reliability researchers often call it omega. One of the reasons for this confusion is that studies that first proposed this coefficient (Jöreskog 1971) did not give this formula a name (Cho 2016). Jöreskog (1971) proposed a matrix-form formula, and the commonly known non-matrix formula appears in Werts et al. (1974).

Frequency of use: Congeneric reliability is the second most commonly used reliability coefficient after coefficient alpha (Cho 2016)

Accuracy: Congeneric reliability is the most accurate reliability coefficient along with the Feldt-Gilmer coefficient (Cho in press)

Computation: This function uses maximum likelihood as estimation, unstandardized covariance matrix as input, and lavaan package as software.

Value

congeneric reliability coefficient

References

Cho, E. (2016). Making reliability reliable: A systematic approach to reliability coefficients. Organizational Research Methods, 19(4), 651-682.

Cho, E. (in press). Neither Cronbach's alpha nor McDonald's omega: A comment on Sijtsma and Pfadt. Psychometrika.

Jöreskog, K. G. (1971). Statistical analysis of sets of congeneric tests. Psychometrika, 36(2), 109-133.

Werts, C. E., Linn, R. L., & Jöreskog, K. G. (1974). Intraclass reliability estimates: Testing structural assumptions. Educational and Psychological Measurement, 34, 25-33.