psychometrics

This post contains a workflow that vastly speeds up the process of scale scoring and computing psychometrics such as Cronbach’s alpha.

The Fornell-Larcker criterion (Fornell & Larcker, 1981, p. 41) is a popular technique to check the discriminant validity of constructs in structural equation models. The criterion states that the average variance extracted (AVE) of items by a construct (factor) should be larger than the squared correlation of the latent construct with the discriminant construct.

Update 2022 Since the time since I wrote this blog post, a package has been developed that caulcates the multi-level reliability coefficient omega within R. See the function omegaSEM from multilevelTools.