@dp_moriarity Nice quote from the abstract:

"Results show that factor scores have (a) higher correlations with true scores (Δ = 0.02–0.04), (b) higher sensitivity (Δ = 4–8 percentage points), and (c) higher reliability (Δ = 0.04–0.07). Factor score performance metrics also have less sampling variability in most conditions."

Let's not just use sum scores!

#Psychometrics #PsychMethods #FactorAnalysis