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What are ROC curves and how are these used to aid decision making? September 18, 2023
What exactly qualifies as intensive longitudinal data and why am I not able to use more traditional growth models to study stability and change over time? October 14, 2022
What’s the best way to determine the number of latent classes in a finite mixture analysis? November 11, 2021
My advisor told me to use principal components analysis to examine the structure of my items and compute scale scores, but I was taught not to use it because it is not a “true” factor analysis. Help! October 12, 2021
I fit a multilevel model and got the warning message “G Matrix is Non-Positive Definite.” What does this mean and what should I do about it? July 22, 2021