Welcome! The first 4 documents belong to the methods/demo paper, while the tutorial document belongs to the tutorial paper. Here’s what’s needed to run the code:

1 TwinLife CFT 20-R analyses

  1. TwinLife data: Must be requested from GESIS.
  2. CFT 20-R, German version norms: Means and SDs (Streuung) of “Teil-1 Max” have to be manually extracted from the manual for age groups 11;1-11;6 through 60-64. The Normalised Manual IQ values presented in Table 2 in the manuscript also have to be extracted.
  3. The census tables, which we provide on our OSF project.

2 Tutorial / Wordsum analyses

We provide all data and code on our GitHub repo and OSF project.