IBG Wiki

Updated 10-Aug-2020

1. Family Background measures including SES measures - parental education, parental jobs
2. Preschool exposure measures
3. Print & READ Exposure
4. School measures including whether twins were in same and different classrooms

1. CSAP - School performance scores from Colorado for years 2003-2005
2. Same or different classrooms for F1,F2,F3, & F4
3. Parental education - averaged years of education from Qs 13 & 14 of the READ survey (several alternates)
4. Parental Age and ethnicity from birth records in CO
5. Birth measures (Updated to Health file)
6. READ survey items at Pre-K (IT)
7. PRINT survey items at Pre-K (IT)
8. Father & Mother TOWRE (collected around F2)

1. Classroom status - close to complete in all countries
2. Parental education - needs work
   • Multiple iterations for projects at different timepoints (Robin Peterson, Anne Bernard)
   • Different category reference points in different countries
   • Change in educational status over IT-F4 interval not in file
3. READ survey - 80% or more in all countries but Sweden
4. PRINT survey - 80% or more in all countries but Sweden
5. Parental TOWRE - Approximately 60% for fathers and mothers in AUS, 30% fathers & 80% mothers in CO, no data from Scandinavia