Multilevel modeling with longitudinal data in RStudio (Example from Hox et al., 2018)

This video provides a demonstration of multilevel modeling of longitudinal data using an example in Chapter 5 of Hox et al.'s (2018) book, Multilevel modeling: Techniques and applications (3rd ed), www.taylorfrancis.com/books/m... .
A copy of the SPSS data file referenced in the video can be downloaded here:
drive.google.com/file/d/1lKdY...
You can download a pdf I created from an RMarkdown file that provides additional details and code here: drive.google.com/file/d/1agkA...
Text file containing just the syntax covered in the video:
drive.google.com/file/d/1JKXY...
Table 5.6 (for comparison; note: intercept for M3 in table seems likely incorrect):
drive.google.com/file/d/1j60p...

[@user-vz2vq1ti4v]

Hei! Love your channel and your videos! I am struggling with analysing nested PISA 2022 data in RStudio. Would it be possible to make a video on how to do two-level HLM (students within schools based on one country) with the weights and how to use PVs on a student level? Would help me out a lot!