AVE & CR in the CFA

[Husain Akareem]

So far, I think this is one of the best R groups to discuss issues related to one specific package (Lavaan). I simply love this group. 

During the CFA, how can I get the AVE and CR values for each factor/construct? Is there any specific function or command that generates these values or should I manually calculate these values using an excel sheet (which is very time consuming)?

[balal izanloo]

Hi

First instal semTools then After fitting your model in lavaan use reliability function from semTools to compute AVE and CR. for example:

library(lavaan)

library(semTools)

CFA.2F <-'

F1=~ PVD2+PVD5+PVD6+PVD8+PVD10+PVD12+PVD14
F2=~ PVD1+PVD3+PVD4+PVD7+PVD9+PVD11+PVD13+PVD15
'
CFA.2F.sus <- cfa(CFA.2F, data = sus1,std.lv = TRUE,ordered=names(sus1), estimator = "WLSMV")
summary(CFA.2F.sus , fit.measures = TRUE, standardized = TRUE)
# what you need

print(reliability(CFA.2F.sus,return.total = TRUE), digits = 3)

 

On Thu, Dec 31, 2020 at 7:59 AM Husain Akareem <h...@iuj.ac.jp> wrote:

So far, I think this is one of the best R groups to discuss issues related to one specific package (Lavaan). I simply love this group. 

During the CFA, how can I get the AVE and CR values for each factor/construct? Is there any specific function or command that generates these values or should I manually calculate these values using an excel sheet (which is very time consuming)?

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[Husain Akareem]

Dear Balal,

Thanks for sharing the codes. I'll definitely try that. 😄

Kind regards,

Husain Akareem, PhD

Assistant Professor

International University of Japan

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[drsco...@gmail.com]

I have a calculator that does this based on loadings. It's at https://www.thestatisticalmind.com/composite-reliability/ it will soon be moved to enablytics.com but is still at that site now.

[balal izanloo]

Greeting

Simply instal semTools package then After fitting your model in lavaan use the reliability function from semTools to compute AVE and CR. 

for example:

library(lavaan)
library(semTools)

CFA.2F <-'F1=~ PVD2+PVD5+PVD6+PVD8+PVD10+PVD12+PVD14
          F2=~ PVD1+PVD3+PVD4+PVD7+PVD9+PVD11+PVD13+PVD15'

CFA.2F.sus <- cfa(CFA.2F, data = sus1,std.lv = TRUE,ordered=names(sus1), estimator = "WLSMV")

summary(CFA.2F.sus , fit.measures = TRUE, standardized = TRUE)
# what you need
print(reliability(CFA.2F.sus,return.total = TRUE), digits = 3)

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[Cami Salazar]

Hello! 

Greetings! Thank you for your guidance. 

I am trying to estimate AVE and CR using reliability function on semTools as you suggested. I am also using the WLSMV estimator, but fitting a 1 factor model. However, I get this error:

Error in ly[[i]] %*% ve[[i]] : non-conformable arguments

I re-installed the semTools package, but I get the same error again. Any suggestions?

Best regards,

Cami 

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[balal izanloo]

Pleasd past and then Send your comands to thd group so any one can help you, if he/she want.

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[Terrence Jorgensen]

I am trying to estimate AVE and CR using reliability function on semTools as you suggested. I am also using the WLSMV estimator, but fitting a 1 factor model. However, I get this error:

Error in ly[[i]] %*% ve[[i]] : non-conformable arguments

I re-installed the semTools package, but I get the same error again. Any suggestions?

This example works fine for me in the current CRAN versions:

library(semTools)

example(lavTables)

reliability(fit)

Terrence D. Jorgensen

Assistant Professor, Methods and Statistics

Research Institute for Child Development and Education, the University of Amsterdam

http://www.uva.nl/profile/t.d.jorgensen

[Pat Malone]

Harmanjit,

?reliability (or the semTools manual on CRAN) gives all the detail you could want on this.

Pat

On Fri, May 21, 2021 at 4:40 AM Harmanjit Singh <harman...@gmail.com> wrote:

Hi Terrence,

The output using reliability () function shows following values: alpha, omega, omega2, omega3, and avevar.
While I understand 'avervar' represents AVE, I am in fix whether 'alpha' represents chronbach's alpha or composite reliability? 
Kindly share your views.

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Patrick S. Malone, PhD

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+1 803.553.4181  |  pat@  |  farharbor.com

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