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.