NBN

Author: D. Schellig, U. Schuri & M. Arendasy

N-Back Non-Verbal

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Please note that this product can only be administered if you have a valid Vienna Test System administration software license for VTS online or a local VTS version 8.0.00 or higher.

Field of Application+

NEURO

TRAFFIC

SPORT

Staff & Management Assessments

Job & Career Placement

Safety & Security Assessment

Academic Testing

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

Products specifications

Languages	Dutch, English (USA), German
Test information	wide 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>, parallel 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>, language-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>, links 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>, conforms 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>
Dimensions	Memory
Test type	Special Ability Tests

NBN