IRCT20180517039699N1 IRCT 2018-07-08 University of social welfare and rehabilitation sciences The effect of cognitive rehabilitation based on information processing speed on occupational performance in people with Multiple Sclerosis The effect of cognitive rehabilitation based on information processing speed on occupational performance in people with Multiple Sclerosis (MS) 2018-07-07 anticipated 70 Complete https://irct.ir/trial/31305 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Other, Purpose: Supportive, Randomization description: Patients in two Rofaydeh and Sina centers are randomly divided into control and intervention groups ( refer odd days to Sina hospital for control group and refer even days to Rofaydeh hospital for intervention group). This division was done by draw with cup, Blinding description: َAfter receiving consent from patients, the way of intervention will be explained to them. But the impact of intervention on evaluation tests and mobility and balance will not be mentioned. N/A Multiple sclerosis. Intervention 1: Intervention group: The intervention group will receive a cognitive rehabilitation program based on the information processing speed through the Can Tab system for 12 sessions. They will also receive common therapies of occupational therapy that include flexibility and balance exercises. Intervention 2: Control group: The control group will receive common therapies of occupational therapy that include include flexibility and balance exercises for 12 sessions. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No more information.