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    N-Back Non-Verbal
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    Please note that this product can only be administrated if you have an online VTS Standard Subscription or a local VTS version from 8.0.00 or higher.

    Field of Application+

    NEURO
    TRAFFIC
    SPORT
    HR
    Detailed Description+

    Assesses visual working memory.
    One of the most important tasks performed by working memory is to maintain and update visual material (verbal material is assessed by the test N-Back verbal NBV). In NBN the item material is difficult to verbalize: this ensures that apart from the central executive only the visual components of working memory are involved. The item design involves consistent implementation of the 2-back or 3-back paradigm. Disorders of working memory are well documented in a number of neurological and mental illnesses, such as Parkinson's disease, Huntington's chorea, ADHD and Alzheimer's disease. The test is therefore used mainly in clinical neuropsychology.

    Test forms+

    S1: 2 back standard form
    S2: 2 back parallel form
    S3: 3 back standard form
    S4: 3 back parallel form

    Task+

    Highly abstract figures are presented one by one. The respondent’s task is to state whether the figure currently displayed is identical to the one shown two places back (2-back paradigm) or three places back (3-back paradigm). If it is, the respondent presses a button as quickly as he can.

    Dimensions+

    Memory

    Languages+

    Dutch

    English (USA)

    German

    Duration+

    approx. 9-11 minutes, depending on test form

    Age+

    Norms for ages 15+.

    Test administration+

    Controlled Mode


    Scoring+

    The following main variables are scored:

    • Correct and omissions: Measure of the ability to maintain and constantly update visual memory representations.
    • Incorrect: Misjudgments – Measure of the executive abilities in goal management.

    The subsidiary variables Mean time “correct”/”incorrect” function as a measure of working speed and reaction speed; they are independent of the quality of the respondent’s answers.

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    Products specifications
    LanguagesDutch
    LanguagesEnglish (USA)
    LanguagesGerman
    Test informationwide norm spectrum <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="In tests with a wide norm spectrum the norms cover a wide age range (wider than ages 16-84), or multiple norm samples (at least two) are available."></i>
    Test informationparallel test form <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="In tests with parallel forms at least one test form is available with content that is entirely equivalent to another form of the test. However, the parallel test forms use different item material."></i>
    Test informationlanguage-free item material <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="A test that uses language-free item material is one that can be worked by a respondent with no linguistic knowledge, provided that the instructions have been understood (for example with support from the test administrator)."></i>
    Test informationlinks to CogniPlus <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="For tests that are linked to CogniPlus there is a CogniPlus training program specifically designed to train the ability measured by the test."></i>
    Test informationconforms to the Rasch-model <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="For a test that conforms to the Rasch model the validity of the Rasch model or a comparable probabilistic test theory model has been proved. This means that all the test's item groups have been proved to measure one dimension and to be fair for various sociodemographic groups (such as different age groups)."></i>
    DimensionsMemory
    Test typeSpecial Ability Tests