Dear colleagues,
I would like to ask for your advice on testing the criterion-related validity of the measuring instrument. It is common practice to test this type of validity by correlation with other relevant variables. However, I received a comment from a reviewer that if I calculate only Pearson correlation, the measurement error is not taken into account and the correlation is underestimated.
He said I should use reliability-corrected correlations or report the correlation by fitting an SEM model where the three factors correlated with the external variables (my measurement instrument is a simple structure with three correlated factors).
Could I ask your advice on how to calculate this? Personally, I do not know how I should proceed. Alternatively, what is your opinion?
Thank you very much.