Letters and Forms

2023 | 2021 | 2020 | 2019 | 2017 | 2015 | 2013 | 2011 | 2010 | 2008 | 2006 | 2005 | 2004 | 2003 | 2002 | 2001 | 2000 | 1999 | 1998

 

Round 2023 – 25-year-old-respondents (E26)

 

Special Round 2023 – Becoming an Adult, Becoming a Parent- 25-year-old-respondents

 

Round 2021 - 23-year-old-respondents (E24)

 

Special Round 2021 - Personality, lifestyle habits and mental health - 23-year-old-respondents

 

Special Round 2020 – COVID-19 – 22-year-old respondents

 

Round 2019 - 21-year-old respondents (E22)

 

Round 2017 – 19-year-old respondents (E20)

 

Round 2015 – 17-year-old children (E18)

 

Round 2013 – 15-year-old children (E16)

 

Round 2011 – 13-year-old children (E14)

 

Round 2010 – 12-year-old children (E13)

 

Round 2008 – 10-year-old children (E11)

 

“Health” round

 

“Health” round amended (adding “epigenetic” analyses)

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Round 2006 – 8-year-old children (E9)

 

Round 2005 – 7-year-old children (E8)

 

Round 2004 – 6-year-old children (E7)

 

Round 2003 – 5-year-old children (E6)

 

Round 2002 – 45-to-56 month-old children (E5)

 

Round 2001 – 41-month-old children (E4)

 

Round 2000 – 29-month-old children (E3)

 

Round 1999 – 17-month-old children (E2)

 

Round 1998 – 5-month-old infants (E1)

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