Socioeconomic status (SES) and education
T1–T3
At T1–T3, SES was estimated using the educational attainment of the mother and father, on a scale from 1 (missing middle school degree) to 6 (university degree). At T3, the occupation of both parents, the household size, and the monthly household income were additionally recorded. At T4, subjectively perceived social status is assessed as self-report with the McArthur Scale [