An Eye Tracking System to Perform the Wechsler Intelligence Children-Fifth Edition (WISC-V) Test: A Case Study

Abstract

The eye tracking technology has a great potential for clinical work, both in the stages of diagnosis and rehabilitation. However, its use has been little explored in relation to cognitive functions. The spastic infantile cerebral palsy is characterized by disturbances of the nervous and muscular system in the muscle tension, muscle strength, coordination and movement patterns. The motor control of individuals suffering this condition is severely compromised limiting their ability to move and speak. The affordances of the eye tracking technology provide an opportunity for the neuropsychological evaluation and the design of rehabilitation programs for this population. This research focuses in a comparative evaluation of fluid reasoning using a paper based method, in contrast to the use of eye tracking technology using the PCEye Mini from Tobii company. The WISC-V battery in the primary scale of fluid reasoning was used. This instrument presents test-retest stability. The subject of this study was a girl of 8 years and 5 months suffering spastic cerebral palsy that affects her motor control in all four limbs, however, she has adequate visual control. The evaluation was conducted initially using the paper based version of the WISC-V battery with the intervention of the evaluator. Later, a digital version of the WISC-V battery was applied using the eye-tracking device Tobbi. The results show higher performance in the tests using of eye tracking device compared to the paper based version of the test WISC-V; also, the response times were less with the use of eye tracking.