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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.

If you have a question about the filter cart, or underlying filters please contact the help desk at The NDA Help Desk

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Clock Test (1997)



The Clock Test (1997) is a two dimensional mental rotation test as defined by Dr. Bradley Peterson's group at Columbia University

Download Definition as
Download Submission Template as
Element NameData TypeSizeRequiredDescriptionValue RangeNotes
subjectkeyGUIDRequiredThe NDAR Global Unique Identifier (GUID) for research subjectNDAR*
clocktest_partIntegerRecommended2D Rotation Task - Clock Test Part # (Child or Adult)1;21 = Child; 2 = Adult
clocktest_item1String1RecommendedClock Test - Item 1A;B;C;DAnswer choice selected by the subject/participant
interview_ageIntegerRequiredAge in months at the time of the interview/test/sampling/imaging.0 :: 1260Age is rounded to chronological month. If the research participant is 15-days-old at time of interview, the appropriate value would be 0 months. If the participant is 16-days-old, the value would be 1 month.
clocktest_item2String1RecommendedClock Test - Item 2A;B;C;DAnswer choice selected by the subject/participant
clocktest_item3String1RecommendedClock Test - Item 3A;B;C;DAnswer choice selected by the subject/participant
clocktest_item4String1RecommendedClock Test - Item 4A;B;C;DAnswer choice selected by the subject/participant
clocktest_item5String1RecommendedClock Test - Item 5A;B;C;DAnswer choice selected by the subject/participant
clocktest_item6String1RecommendedClock Test - Item 6A;B;C;DAnswer choice selected by the subject/participant
clocktest_item7String1RecommendedClock Test - Item 7A;B;C;DAnswer choice selected by the subject/participant
clocktest_item8String1RecommendedClock Test - Item 8A;B;C;DAnswer choice selected by the subject/participant
clocktest_item9String1RecommendedClock Test - Item 9A;B;C;DAnswer choice selected by the subject/participant
clocktest_item10String1RecommendedClock Test - Item 10A;B;C;DAnswer choice selected by the subject/participant
clocktest_item11String1RecommendedClock Test - Item 11A;B;C;DAnswer choice selected by the subject/participant
clocktest_item12String1RecommendedClock Test - Item 12A;B;C;DAnswer choice selected by the subject/participant
clocktest_item13String1RecommendedClock Test - Item 13A;B;C;DAnswer choice selected by the subject/participant
clocktest_item14String1RecommendedClock Test - Item 14A;B;C;DAnswer choice selected by the subject/participant
clocktest_item15String1RecommendedClock Test - Item 15A;B;C;DAnswer choice selected by the subject/participant
clocktest_item16String1RecommendedClock Test - Item 16A;B;C;DAnswer choice selected by the subject/participant
clocktest_item17String1RecommendedClock Test - Item 17A;B;C;DAnswer choice selected by the subject/participant
clocktest_item18String1RecommendedClock Test - Item 18A;B;C;DAnswer choice selected by the subject/participant
clocktest_item19String1RecommendedClock Test - Item 19A;B;C;DAnswer choice selected by the subject/participant
clocktest_item20String1RecommendedClock Test - Item 20A;B;C;DAnswer choice selected by the subject/participant
clocktest_item21String1RecommendedClock Test - Item 21A;B;C;DAnswer choice selected by the subject/participant
clocktest_item22String1RecommendedClock Test - Item 22A;B;C;DAnswer choice selected by the subject/participant
clocktest_item23String1RecommendedClock Test - Item 23A;B;C;DAnswer choice selected by the subject/participant
clocktest_item24String1RecommendedClock Test - Item 24A;B;C;DAnswer choice selected by the subject/participant
clocktest_number_completedIntegerRequiredClock Test - Total Number of Items Completed0 :: 24
clocktest_number_correctIntegerRequiredClock Test - Number of Correct Items0 :: 24
clocktest_number_incorrectIntegerRequiredClock Test - Number of Incorrect Items0 :: 24
src_subject_idString20RequiredSubject ID how it's defined in lab/project
interview_dateDateRequiredDate on which the interview/genetic test/sampling/imaging/biospecimen was completed. MM/DD/YYYYRequired field
comments_miscString4,000RecommendedMiscellaneous comments on study, interview, methodology relevant to this form data
Data Structure

This page displays the data structure defined for the measure identified in the title and structure short name. The table below displays a list of data elements in this structure (also called variables) and the following information:

  • Element Name: This is the standard element name
  • Data Type: Which type of data this element is, e.g. String, Float, File location.
  • Size: If applicable, the character limit of this element
  • Required: This column displays whether the element is Required for valid submissions, Recommended for valid submissions, Conditional on other elements, or Optional
  • Description: A basic description
  • Value Range: Which values can appear validly in this element (case sensitive for strings)
  • Notes: Expanded description or notes on coding of values
  • Aliases: A list of currently supported Aliases (alternate element names)
  • For valid elements with shared data, on the far left is a Filter button you can use to view a summary of shared data for that element and apply a query filter to your Cart based on selected value ranges

At the top of this page you can also:

  • Use the search bar to filter the elements displayed. This will not filter on the Size of Required columns
  • Download a copy of this definition in CSV format
  • Download a blank CSV submission template prepopulated with the correct structure header rows ready to fill with subject records and upload

Please email the The NDA Help Desk with any questions.

Distribution for DataStructure: clock_test01 and Element:
Chart Help

Filters enable researchers to view the data shared in NDA before applying for access or for selecting specific data for download or NDA Study assignment. For those with access to NDA shared data, you may select specific values to be included by selecting an individual bar chart item or by selecting a range of values (e.g. interview_age) using the "Add Range" button. Note that not all elements have appropriately distinct values like comments and subjectkey and are not available for filtering. Additionally, item level detail is not always provided by the research community as indicated by the number of null values given.

Filters for multiple data elements within a structure are supported. Selections across multiple data structures will be supported in a future version of NDA.