Yes — you can explore the data at a summary level while your DUC is still pending approval.

Once your DUC is signed off by your Institutional Signing Official and approved by the Data Access Committee at the National Institutes of Health (NIH), you’ll receive an email prompting you to complete a Responsible Data Use training module and pass the associated quiz. Once you complete these steps, you will have full access to download participant-level data.

Until then, you can:

• View high-level metadata about the available datasets

• See how many and which sessions (visits/timepoints), research domains, and instruments are part of the ABCD and HBCD studies

• Explore participant counts associated with various instruments (and combinations of instruments)

• Browse the data dictionary and create codebooks using the Dictionary Query Tool

• If you plan to use file-based (imaging files) data, prepare by installing Globus via the “Download Tools” module in Lasso (see FAQs 4 and 5 below)

However, you will not be able to download any data until all access requirements are met.

To learn more about what you can do while you wait for DUC approval, please refer to the detailed documentation available here.

To query data, navigate to the Query Data module from the left-hand menu of your Lasso screen.

In the top-right corner, you'll see three query options:

• Query Wizard

• Dictionary Query Tool

• File Based Download

You can toggle between these tools depending on your preferred method for accessing data. Each offers a different approach to querying and downloading datasets.

To learn more about how each tool works and which one best suit your needs, please refer to the detailed documentation available here.

Training videos on the query tools are also available in the Lasso “Help Center” module which you will be able to access after your DUC is approved and the Responsible Data Use Training module is completed.  

For large datasets — particularly imaging files — we recommend using Globus for secure and efficient data transfer.

Globus is designed for handling large-scale downloads and offers a more reliable and faster alternative to browser-based downloads.

For step-by-step instructions on how to use Globus with the Lasso platform, please refer to the detailed guide available here.

No worries — setting up Globus Connect is straightforward, and we’ve got you covered with step-by-step instructions.

You can:

• Read the setup guide directly in the Download Tools module found in the left-hand menu of your Lasso screen or

• Access the full documentation here for a complete walkthrough on how to install the app, initiate downloads, and monitor transfer progress.

If you run into issues, feel free to submit a help ticket via the Help Center module found in the left-hand menu of your Lasso screen.

You can monitor the status of your data transfers in a few simple ways:

1. Click the Globus icon in your system tray (macOS) or open the Globus Application on your Windows machine and select Web: Activity
2. Go to globus.org, log in, and click on the Activity tab

Additionally, you'll receive an email notification once your data transfer is complete.

Tabular (i.e. survey) data will be downloaded to your computer as a CSV file.  

File-based (i.e. imaging) data can come in several formats, including NIfTI (nii.gz), json, tsv, bval, bvec, fdt, set, txt, or more in BIDS-compliant formatting.

You can see the file-based data file types by navigating to the Query Data module found in the left-hand menu of the Lasso screen and toggling to File Based Data in the top-right corner. File types for each imaging modality or variable are written in blue.

To report an issue or ask a question about the study data or Lasso platform:

1. Click on the Help Center module on the left-hand menu of the Lasso platform.

2. Select Submit a Ticket.

3. Fill out the form with as many details as possible — this helps us route your request to the right team and respond efficiently.

For step-by-step guidance, please refer to the full instructions here.

You’ll receive an email confirmation after submitting your ticket, and you’ll be notified by email when there’s an update.

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Not yet — but this functionality is coming soon.
We’re actively working on enabling access to previous dataset versions and will notify users once this feature becomes available.

Stay tuned for updates!