Public Data Documentation

Background Documentation

Weights Documentation

Documentation by Wave

Here you will find general documentation for the data. We highly recommend reading the User Guides for each wave of data you are using, and referring back to those when you have questions while working with the data. The User Guides include information about the data collection and file structure for each wave as well as documentation about specific scales and measures included. To link directly to documentation about specific scales, and see an overview of scales across waves, see the Scales Documentation Navigator.



Year 1     

Year 3     

Year 5   

Year 9     

Year 15     

Year 22
  Wave 1 Wave 2 Wave 3 Wave 4 Wave 5 Wave 6 Wave 7
General Documentation              
User Guide X X X X X X  
Codebook X X X X X X  
Core and In-Home Questionnaires              
Mother Survey m1 m2 m3 m4 m5    
Father Survey f1 f2 f3 f4 f5    
PCG  Survey & Interviewer Observations     p3/o3 p4/o4 p5/o5 p6/o6  
PCG Self Administered         p5    
Child/Teen Survey         k5 k6  
In-Home Activity Workbook     h3 h4 h5 h6*  
Child Care and Teacher Surveys              
Child Care Provider Survey     d3        
Child Care Center Observations     e3        
Family Care Provider Survey     r3        
Family Care Provider Observations     s3        
Post Observation Form     u3        
Teacher Survey       t4 t5    
Sleep Study              
Sleep Actigraphy Data (ID-mean-level)           a6  
Sleep Actigraphy and Diary Survey           a6/kdsd  
Biomarker & Epigenetic Components              
Biomarker Data         x x  
Polygenic Scores (PGS)         x    
Study of Adolescent Neural Development (SAND) COVID-19 Survey              
SAND COVID-19 Survey User Guide             x
PCG SAND COVID-19 Survey             p7umc
YA SAND COVID-19 Survey             k7umc
mDiary Study of Adolescent Romantic Relationships              
mDiary Study User Guide           x  
mDiary Study Questionnaires           k6d  

Note: The links to each questionnaire also indicate the variable name prefix used in the data file for these variables. For example, Mother questions from Year 1 begin with "m2" and Teen questions from Year 15 begin with "k6".

*There is no Activity Workbook Instrument for Year 15, but there are variables with the h6 prefix.