- Rotation. Task duration: 3 trials x 30 seconds each
Materials necessary for this subtest are the same as for the previous (no. 9). With this
subtest, the lower part of the board has 48 pegs already placed into holes. The task is to
remove one peg from a hole by rotation and then reintroducing it into the hole, using the
preferred hand. The task is performed three times, seeking to take out and reinsert as
many pegs as possible in the allotted time.
The subtest measures the manual dexterity.
- Assemble. Task duration: 90 seconds
Materials necessary for this subtest and for the next (nr. 12) are a rectangular board with
50 holes, several metal rivets and washers. The task is to pick up (with the preferred
hand) a metal rivet from a hole on the upper side of the board and at the same time take a
washer off a rod with the other hand. Then the washer is placed on the rivet and are
inserted in the lower part of the board in the hole corresponding to the hole on the upper
side from where the rivet has just been removed (using only the preferred hand). The task
implies performing as many operations as possible in the allotted time.
The subtest measures finger dexterity.
- Disassemble. Task duration: 60 seconds
Materials necessary for this subtest are the same as for the previous (nr. 11). The task is to
remove the metal rivet with its washer from a hole on the lower side of the board, insert
the washer on a rod with one hand and – at the same time – introduce the rivet (with the
preferred hand) into the corresponding hole on the upper side of the board from where the
rivet has just been removed. The task implies performing as many similar operations as
possible in the allotted time.
The subtest measures finger dexterity.
The 9 key aptitudes defined within GATB are:
Aptitude G – General learning ability is measured in subtests 3, 4, and 6
(Three-dimensional space, Vocabulary and Arithmetic reasoning). Aptitude G is defined
as the ability to “catch” ideas, understand instructions, find general principles, reason and
issue judgements; it is highly correlated with the success in school.
Examples of work situations: acquiring knowledge, carrying out procedures,
understanding oral or written instructions and applying them in various work situations.
Examples of occupations where the weight of aptitude G is significant: air controller,
engineer, teacher, pharmacist, doctor, accountant, mathematician.