Corsi's block tapping task

From Psy3241

Corsi’s block tapping test is a neuropsychological assessment that measures spatial memory. It is composed of a set of wooden blocks that are numbered on only one side, so that the experimenter is the only one to see them. The subject remains seated at a table as the experimenter taps out a sequence of blocks, which the subject must immediately replicate. Because the subject is unable to see the numbers, they are forced to memorize the correct sequence, thus engaging their spatial memory abilities. Clasically, the experimenter will increases the length of the sequence in order to establish a spatial memory span (Sterling, 2002). DeRenzi and Nichelli (1975) found a reduced spatial memory span in patients with bilateral posterior damage. Because spatial memory appears to be localized to the right hemisphere, this test becomes particularly difficult for respondents with right frontal damage. Both hemispheres, however, do contribute to spatial processing. Sterling (2002) suggests that the right hemisphere may be specialized for processing “coordinate” spatial relations, and the left hemisphere may be specialized for “categorical” spatial locations. The Corsi tapping test has also been adapted for electronic touch screen use.