Validation and Test-retest Study of the Star-shaped Manual Dexterity Test.

Measurement of static arm strength. Test subject is asked to hold a 2.5 kg weight in their dominant arm fully extended at 90-degree flexion and 15-degree abduction as long as possible without moving.

During completion of the star shaped manual dexterity test, the test subject is asked to identify cards from a regular deck of playing card by naming the suit and rank of the card. They will be asked to identify one random card during each of the 10 rounds in the completion of the test

On a piece of wood, a piece of metal (dimensions 22 cm x 22 cm) is mounted. In the center of the metal plate, is a star shaped track. The star has 6 points and the track is 9 mm wide. It measures 15,3 cm from the tips of opposing arms of the star. With a surgical scissor in his dominant hand, the test subject is instructed to follow the star shaped track ten times, five times clockwise and five times counter clockwise. Contact with the border of the track is counted as an error. A computer software program automatically registers completion time and number of errors. The test is conducted in an undisturbed environment.