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IBF Basic Intelligence Functions

ITB Institut für Test und Begabungsforschung GmbH Bonn & G. Gittler
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Application

Assesses intelligence level and intelligence structure on the basis of Thurstone’s four primary factors of intelligence (spatial ability, long-term memory, numerical intelligence and verbal intelligence). This test provides a quick, global overview of the intelligence level. It is used successfully in recruitment in various occupational fields and in job & career placement for young people.

Administration

The four abilities are assessed by means of various item groups. A limited time is allowed for each item group. Within an item group, answers can be corrected as often as necessary until the time allowed expires.

Verbal intelligence is measured by means of verbal analogy tasks (general intelligence) and sentence completion tasks (world knowledge). Numerical intelligence is measured by means of text tasks (numerical processing capacity) and tasks that involve identifying mathematical rules (inductive reasoning). Spatial ability is assessed by means of a three-dimensional cube test. The memory task is divided into a memorizing phase and a test phase.

A limited time is allowed for each item group. The respondent selects an answer on the multiple-choice principle. Answers can be amended, repeatedly if necessary. Within the permissible time limits it is possible to go back to any item in the group in order to change the answer.

Test forms

S1: Standard form
S2: Easy short form – testing in the lower ability range

Scoring

The following main variables are scored:

  • Verbal intelligence functions: Measure of the quick and confident application of general knowledge and formal logical reasoning to verbal information.
  • Numerical intelligence functions: Shows how good the respondent is at analyzing numerical material and identifying and applying rules.
  • Long-term memory: Shows how good the respondent is at memorizing information under time pressure and recalling it when needed.
  • Spatial perception: Measure of the ability to picture objects in three-dimensional space and if necessary rotate them in one's mind.
  • Global variable – intelligence: Summarizing test score that describes the respondent’s intelligence level.

Useful additional information:

  • Detailed task-group-specific results.
  • IQ norming.

Scoring elements

Table
Profile
Working time
Confidence interval
Profile analysis
Test protocol
Item analysis protocol
Progress chart
Special diagrammatic representation of results
Personalized Word report
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Test type

Intelligence Test Batteries

Test information

adaptive
modular
language-free item material
parallel test form
conforms to the Rasch-model
additional device required
high level of test security
wide norm spectrum
test form available for online presentation - open mode
links to CogniPlus
supervisor-supported testing

Languages

Arabic
Bosnian
Chinese (traditional)
Croatian
Czech
Dutch
English
Farsi
Finnish
French
German
Greek
Hungarian
Italian
Polish
Portuguese
Romanian
Russian
Serbian
Slovak
Spanish
Turkish

Duration

If all subtests are presented, 30–65 minutes depending on test form.

 

Age

Norms for ages 13+ (S2).