Lexical Knowledge Test
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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+

Detailed Description+

Adaptive assessment of lexical knowledge and respondent’s self-estimate of their ability.
General ability tests are good predictors of success in work or training. The assessment of crystallized intelligence is therefore central to the creation of cognitive ability profiles in the context of queries in the field of personnel psychology.

Test forms+

S1: Short form
S2: Standard form
S3: Long form – increased measurement precision
S5: Bi-adaptive form
S11: Easy linear form
S12: Difficult linear form


Each item requires respondents to state whether they are familiar with a particular word. By selecting an answer from a set of options the respondent then fills in the gaps in a text to provide a meaningful definition of the word.


Cognitive abilities




approx. 15-20 minutes, depending on test form


Norms for ages 15+.

Test administration+

Controlled Mode


The following main variables are scored:

  • Lexical knowledge: Measure of general intelligence – indicator of education and socialization.
  • Pretended knowledge: Tendency to assess one’s own capability.
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Products specifications
Test informationadaptive <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="In adaptive tests the item difficulty adapts during the test to the respondent's ability. In these tests the number of items presented may also vary in at least one subtest or test form."></i>
Test informationhigh level of test security <i class="fas fa-info-circle tooltips test-info" data-container="body" data-placement="top" data-toggle="tooltip" title="A test has a high level of test security if steps have been taken to prevent disclosure of the answers or answer scheme. Examples of such steps include prevention of unsupervised online testing, the provision of parallel test forms and the use of objective personality tests and adaptive tests."></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>
DimensionsCognitive abilities
Test typeSpecial Intelligence Tests