Page Last Updated: December 9, 2025
Pending Updates🔗
Release 2.0🔗
Expected Release Date: February 2026
2.0 New Participant Data & Study Instruments🔗
Additional Participant Data🔗
- Multiple Birth Participants (MBP): multiple participants from the same birth (e.g. twins)
- Postnatal Recruits (PNRs) who joined the study after the child is born (complete a modified V01 and V02)
New Study Instruments/Measures🔗
Approximately 30 new study instruments/measures will be added across the following domains. Click to expand the section below to view the full list.
|
MRI & MRS Behavior & Caregiver–Child Interaction Biospecimen & Omics |
Neurocognition & Language Physical Health Pregnancy & Exposure, Including Substance Use Social & Environmental Determinants |
| Domain | Instrument |
|---|---|
| IMG Magnetic Resonance Imaging & Spectroscopy | Pre-Scan Questionnaire |
| MHBehavior & Caregiver-Child Interaction | CHAOS (Confusion, Hubbub and Order Scale) |
| ecPROMIS (1) Child-Caregiver Relationship (1-5 year), (2) Peer Relationships, & (3) Self-Regulation & Flexibility | |
| FAD (GF6+) (Family Assessment Device (General Functioning 6+)) | |
| HOME-21 IT (Home Observation for Measurement of the Environment Infant-Toddler Version) | |
| ECBQ (VSF)+BI (Early Childhood Behavior Questionnaire Very Short Form + Behavior Inhibition) | |
| MAPS-TL (Multidimensional Assessment Profiles - Temper Loss Scale) - Addition of Version: Toddlerhood & Preschool | |
| BIOBiospecimen & Omics | Illumina GDA GWAS (Maternal & Child) |
| NCLNeurocognition & Language | Bayley-4 (Bayley Scales of Infant and Toddler Development) |
| MacArthur-Bates CDI-I (Communicative Development Inventories) Words & Gestures | |
| SPM-2 (Sensory Processing Measure-2) - Addition of Version: Toddler | |
| Vineland Adaptive Behavior | |
| PHPhysical Health | Brief Infant Sleep Questionnaire (BISQ-SF) |
| ecPROMIS: (1) Physical Activity & Green Space & (2) Sleep | |
| Medical History | |
| Infant Nutrition Questionnaire | |
| Screen-Based Media Use (ScreenQ) | |
| Vision Screener | |
| PEXPregnancy Exposure, Including Substance Use | Alcohol, Smoking and Substance Involvement Screening Test (ASSIST) - Addition of ASSIST V4 |
| Substance Use Patterns | |
| SEDSocial & Environmental Determinants | Geocoded Linkage |
| Adverse Childhood Experiences (ACEs) - including Adult & Pediatric versions | |
| Composite Abuse Scale (CABr-SF) | |
| Current Employment | |
| Demographics Adult & Child - V4 & V6 | |
| Household Chemical Exposures | |
| Lead Exposures | |
| PACES (Protective Factors) - Addition of Version <18 | |
| Second Hand Smoke Exposure | |
| Transition in Care Screener | |
| Vancouver Index of Acculturation (VIA) |
2.0 Existing Study Data Updates🔗
| Domain | Table/Data | Pending Update |
|---|---|---|
| Physical Health | Growth (ph_ch_anthro) |
Inclusion of age-based height/weight/head z-scores calculated based on (non-jittered) date of birth. |
| Magnetic Resonance Imaging & Spectroscopy | MR Derivatives | Processed Infant fMRIPrep and XCP-D derivatives for visits V03+. |
| Magnetic Resonance Imaging & Spectroscopy | MR Scans TSV |
Addition of MRI Scanner Information for all scanners at each site to Scans TSV files (sub-{ID}_ses-{V0X}_scans.tsv), including ScannerManufacturer, ScannerModel, ScannerSoftwareVersion, and ScannerSerialNumber (used to differentiate different scanners at the same site). Note that this information is currently available in the sidecar JSON files for raw imaging data, e.g.:
hbcd/rawdata/sub-{ID}/ses-{V0X}/anat/sub-{ID}_ses-{V0X}_run-{X}_T1w.json
|
Release 2.1🔗
Expected Release Date: TBA
2.1 Existing Study Data Updates🔗
| Domain | Table/Data | Pending Update |
|---|---|---|
| Magnetic Resonance Imaging & Spectroscopy | DICOMs | Addition of source DICOMs for raw BIDS for all imaging modalities. |