PROJECT PAGE
Adolescent Brain Cognitive Development (ABCD) Study
The ABCD Study is the largest long-term study of brain development and child health in the United States. The ABCD Research Consortium consists of a Coordinating Center (CC), a Data Analysis, Informatics and Resources Center (DAIRC), and 21 research sites across the country, which have invited more than 10,000 children ages 9-10 to join the study. Researchers are tracking their biological and behavioral development through adolescence into young adulthood. The ABCD protocols include a comprehensive set of physical, cognitive, social, emotional, environmental, behavioral, and academic assessments, as well as multimodal neuroimaging and biospecimen collection for hormonal, genetic, epigenetic, environmental exposure, and substance use analysis. These assessments are anticipated to be done annually (non-imaging) or biannually (imaging and bioassays) for 10 years.
Principal Investigator(s): https://abcdstudy.org/principal-investigators/
General Information
Country of Data Collection: USA
Years of Data Collection: 2016-present
Study Status: Ongoing
Total Number of Assessments Completed: 3
Approx. Retention Rate:
Sample
Composition: Family Study (children, parents); Multi-Site Study
*Note: The primary method for recruiting children aged 9 or 10 at the time of the baseline assessments (between 2016 and 2018) and their parents was probability sampling of public and private elementary schools within the catchment areas of the 21 research sites, encompassing over 20% of the entire US population of 9–10 year olds. The final sample who completed the baseline assessment approached the diversity of the US population on several socio-demographic characteristics, despite not being nationally representative.
Sex
SES
Race/Ethnicity
Personality Data
Construct
Impulsivity
Behavioral Inhibition
Behavioral Approach
Positive Affect
Temperament (3)
Scale
UPPS-P-SF for Children
BIS/BAS Scales
BIS/BAS Scales
NIH Toolbox
Early Adolescent Temperament Questionnaire
Waves*
T1, T3
T1, T3
T1, T3
T2
T3
Method
Self-Report
Self-Report
Self-Report
Self-Report
Parent-Report
*The plan is to repeat the measures administered at T2 and T3 through age 19-20, which will eventually produce 5 waves of data for EATQ and Positive Affect, and 6 waves of data for UPPS-P and BIS/BAS.
Academic/school
affect
cognitive ability
cognitive/behavioral tasks
culture
life events
mental health
neighborhood
neurobiological measures
parenting
physical health
psychophysiology
relationships
Data Access
Project Website: https://abcdstudy.org/
Codebook Available Online: Yes, https://abcdstudy.org/scientists/protocols/
Data Available Online: Yes, data are annually released via the NIMH Data Archive. See here for more information about the data release schedule.
Project Proposal Required to Use Data: Yes, you must request data access by creating an NDA account here.
Contact
Contact: To view the various points of contact, see here: https://abcdstudy.org/contact/