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), https://www.taylorfrancis.com/books/mono/10.4324/9781315650982/multilevel-analysis-joop-hox-mirjam-moerbeek-rens-van-de-schoot .

A copy of the SPSS data file referenced in the video can be downloaded here:
https://drive.google.com/file/d/1lKdYpZp0tTlQ9eUOBX_WC8QUlE2q9Zar/view

You can download a pdf I created from an RMarkdown file that provides additional details and code here: https://drive.google.com/file/d/1agkAtHK_qxIzbaENus86SniwtuQegjtM/view

Text file containing just the syntax covered in the video:
https://drive.google.com/file/d/1JKXYJHLY56nYZaGRhEfghj_l1d__K4cH/view

Table 5.6 (for comparison; note: intercept for M3 in table seems likely incorrect):
https://drive.google.com/file/d/1j60pnt39vgWtvbAc3wjde4zWL6g2WdPD/view