Abstract
The present study aimed to assess executive functions (inhibition, planning, and mental flexibility) in patients with multiple sclerosis. The study used a sample consisting of three cases selected intentionally, applying the case study method. The researcher applied the following study tools, taken from the Brief Cognitive Assessment Battery for patients with multiple sclerosis (BC COG SEP): the Go/No-Go test, the Trail Making Test (TMT), and the Clock Drawing Test (CDT).
The results of the study concluded that:
- Patients with multiple sclerosis suffer from cognitive impairment at the level of inhibition function.
- Patients with multiple sclerosis suffer from cognitive impairment at the level of planning function.
- Patients with multiple sclerosis suffer from cognitive impairment at the level of mental flexibility function.

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