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NDAR provides a single access to de-identified autism research data. For permission to download data, you will need an NDAR account with approved access to NDAR or a connected repository (AGRE, IAN, or the ATP). For NDAR access, you need to be a research investigator sponsored by an NIH recognized institution with federal wide assurance. See Request Access for more information.

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The filters you have selected from various query interfaces will be stored here, in the 'Filter Cart'. The database will be queried using filters added to your 'Filter Cart', when multiple filters are defined, each will be executed using 'AND' logic, so with each filter that is applied the result set gets smaller.

From the 'Filter Cart' you can inspect each of the filters that have been defined, and you also have the option to remove filters. The 'Filter Cart' itself will display the number of filters applied along with the number of subjects that are identified by the combination of those filters. For example a GUID filter with two subjects, followed by a GUID filter for just one of those subjects would return only data for the subject that is in both GUID filters.

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Format should be in the following format: Activity Code, Institute Abbreviation, and Serial Number. Grant Type, Support Year, and Suffix should be excluded. For example, grant 1R01MH123456-01A1 should be entered R01MH123456

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Collection Owners and those with Collection Administrator permission, may edit a collection. The following is currently available for Edit on this page:


Title, investigators, and Collection Description may be edited along with the Collection Phase. For Collection Phase, the options Pre-enrollment, Enrollment, and Completed can be chosen allowing the Collection Owner to indicate the stage of data collection.

Funding Source

The ability to associate the funding source for the project is provided. For NIH funded grants, linkage to Project Reporter information (e.g. R01MH123456) is supported. Projects funded by others, including the URL of the project, are listed. Non NIH funded projects will become available here to link that data with the appropriate funding agency.

Supporting Documentation

Any documents related to the project may be uploaded clarifying the data or acquisition methods used may be uploaded and made available here. The default is to share these documents to the general public. An option to share only to qualified Researchers is also an option.

Clinical Trials

For clinical trials, the option to link to the clinical trial in clinicaltrials.gov is optionally provided.

Collection Summary Collection Charts
Collection Title Collection Investigators Collection Description
Eyeblink conditioning in school-aged children with ASD
John Welsh 
Our project seeks to apply an objective behavioral measure of brain function that may identify sites of neuraldysfunction in autism spectrum disorder (ASD). Our paradigm will be a robust measure of associative learning- Pavlovian eyeblink conditioning (EBC) to assess how fundamental building-blocks of higher brain functionmay be disrupted in school-aged children with ASD. The subjects will be 99 10-year-old children that arecurrently participating in one of two longitudinal studies examining: 1) the effect of an early behavioralintervention on the cognitive development of children with ASD; and 2) the neurochemical and neurostructuralrisk factors for developing ASD. Of note is that all of our subjects have had neurochemical and structuralimaging at 24 months of age along with ongoing longitudinal clinical and behavioral assessments up to thecurrent time. The project builds upon strong preliminary data demonstrating that ASD severity and EBCperformance deficits are related. Our goal is to apply EBC in a well-controlled group of children whose ASDhistory has been extensively documented to determine whether EBC can aid in understanding long-termdevelopmental outcome. Because the children had high-resolution anatomical brain scans and neurochemicalimaging at approximately 24 months of age, we can now relate variability in EBC performance to alterations inearly brain morphology and metabolism. An advantage of EBC is that it does not require language, socialinteraction, or active participation. Thus, EBC can be applied equally to high-functioning children and very lowfunctioningchildren with ASD for whom quantitative measures of behavioral development are difficult to obtain.The project will have the following impact: 1) it will address a crucial need for long-term outcome studies ofdevelopmental processes and outcomes in ASD; 2) it will help to identify the underlying neural mechanisms of ASD; 3) it could point to implementing EBC at earlier ages to assess ASD risk.
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NIH - Extramural None

R01MH100887-01 Eyeblink conditioning in school-aged children with ASD 02/13/2014 12/31/2018 99 65 SEATTLE CHILDRENS HOSPITAL $2,040,351.00

Collection Owners and those with Collection Administrator permission, may edit a collection. The following is currently available for Edit on this page:


To create a new Omics, eye tracking, fMRI, or EEG experiment, press the "+ New Experiment" button. Once an experiment is created, then raw files for these types of experiments should be provided, associating the experiment – through Experiment_ID – with the metadata defined in the experiments interface.

IDNameCreated DateStatusType
No records found.

Collection Owners and those with Collection Administrator permission, may edit a collection. The following is currently available for Edit on this page:

Shared Data

Data structures with the number of subjects submitted and shared are provided.

Autism Diagnostic Observation Schedule, 2nd Edition (ADOS-2) - Module 1 Clinical Assessments 4
Autism Diagnostic Observation Schedule, 2nd Edition (ADOS-2) - Module 2 Clinical Assessments 3
Autism Diagnostic Observation Schedule, 2nd Edition (ADOS-2) - Module 3 Clinical Assessments 45
DAS-II: Differential Ability Scales 2nd Ed. School Age Clinical Assessments 55
DSM-5 Checklist Clinical Assessments 51
DSM-IV Checklist (Early Steps; SOFAS) Clinical Assessments 10
Social Responsiveness Scale (SRS) Clinical Assessments 11
Vineland-II - Survey Form (2005) Clinical Assessments 47

Collection Owners and those with Collection Administrator permission, may edit a collection. The following is currently available for Edit on this page:


Publications relevant to NDAR data are listed below. Most displayed publications have been associated with the grant within Pubmed. Use the "+ New Publication" button to add new publications. Publications relevant/not relevant to data expected are categorized. Relevant publications are then linked to the underlying data by selecting the Create Study link. Study provides the ability to define cohorts, assign subjects, define outcome measures and lists the study type, data analysis and results. Analyzed data and results are expected in this way.

PubMed IDStudyTitleJournalAuthorsDateStatus
27563293Create StudyAutism and Classical Eyeblink Conditioning: Performance Changes of the Conditioned Response Related to Autism Spectrum Disorder Diagnosis.Frontiers in psychiatryWelsh JP, Oristaglio JTJanuary 2016Not Determined

Relevant Publications
PubMed IDStudyTitleJournalAuthorsDate
No records found.
Data Expected
Data ExpectedTargeted EnrollmentInitial SubmissionSubjects SharedStatus
Social Responsiveness Scale (SRS) info iconApproved
DAS-II: Differential Ability Scales info iconApproved
Research Subject and Pedigree info iconApproved
Child Behavior Checklist (CBCL) info iconApproved
ADOS info iconApproved
DSM IV Criteria info iconApproved
Bruininks-Oseretsky Test info iconApproved
ADI-R info iconApproved
Vineland (Parent and Caregiver) info iconApproved
DSM-5 Checklist info iconApproved
Eye Tracking info iconApproved
Structure not yet defined

Collection Owners and those with Collection Administrator permission, may edit a collection. The following is currently available for Edit on this page:

Associated Studies

Studies that have been defined using data from a Collection are important criteria to determine the value of data shared. The number of subjects column displays the counts from this Collection that are included in a Study, out of the total number of subjects in that study. The Data Use column represents whether or not the study is a primary analysis of the data or a secondary analysis. State indicates whether the study is private or shared with the research community.