The BUTP is the first phase of two projects that study early child temperament and related behaviors. This phase focused primarily on activity level and comprised of over 300 same-sex twin pairs assessed at ages 2 and 3. Of the twin pairs, 144 monozygotic and 168 dizygotic twins participated in the age 2 assessments, and 141 monozygotic and 163 dizygotic twins returned for the age 3 assessments. Twins were assessed again in adolescence through the BUTP Adolescent Follow-Up Online Study.
Study design
Cohort - birth, Cohort - twin
Number of participants at first data collection
628 (participants)
Age at first data collection
2 - 3 years (participants)
Participant year of birth
2001 - 2004 (participants)
Participant sex
All
Representative sample at baseline?
No
Sample features
Country
Year of first data collection
2008
Primary Institutions
Boston University (BU)
Profile paper DOI
Funders
National Institutes of Health (NIH)
Ongoing?
No
Data types collected
Engagement
Keywords
Consortia and dataset groups