Arab Today, arab today higher education protects against cognitive decline
Last Updated : GMT 02:11:15
Arab Today, arab today
Arab Today, arab today

Higher education protects against cognitive decline

Arab Today, arab today

Arab Today, arab today Higher education protects against cognitive decline

Washington - Arab Today

Researchers in Italy have found that multiple sclerosis patients with high educational levels suffer less cognitive impairment compared with those with low educational levels. MS is a progressive immunologic brain disorder with neuropsychological deficits including selective attention, working memory, executive functioning, information processing speed, and long term memory. These deficits often impact daily life (ability to do household tasks, interpersonal relationships, employment, and overall quality of life). In this study, investigators first assessed the role of cognitive reserve, the brain\'s active attempt to focus on how tasks are processed, in compensating for the challenge represented by brain damage. Earlier studies had reported that higher cognitive reserve protects MS subjects from disease-related cognitive inefficiency but in these studies cognitive reserve was mainly estimated through a vocabulary test. Here, investigators considered educational level and occupational attainment instead of vocabulary. They also evaluated both educational and occupational experience, hypothesizing that an individual\'s lifetime occupational attainment could also be considered a good proxy of CR, similar to the way in which higher occupational attainment reduces the risk of Alzheimer\'s disease. The second aim of the study was to investigate the possible role of perceived fatigue. Fatigue can have a great negative influence on daily life, so that higher perceived fatigue might result in lower cognitive performance. Fifty consecutive clinically diagnosed MS patients took part in the study. A control group included 157 clinically healthy subjects, with no psychiatric or neurological diagnosis. Individuals in both groups were, on average, of the same age, education level and gender. The mean age was 40.41years, with 12.37 years of education. Cognitive performance was evaluated using the Paced Auditory Serial Addition Test (PASAT), in which a series of single digit numbers are presented and the two most recent digits must be summed. This test has high sensitivity in detecting MS-related cognitive deficits as it relies strongly on working memory and information processing speed abilities. Fatigue was evaluated through the Modified Fatigue Impact Scale (MFIS), which assesses the effects of fatigue in terms of physical, cognitive, and psychosocial functioning. Of the 50 clinically diagnosed patients, 17 had less than 13 years of schooling, without obtaining any secondary level diploma, and 33 had received more than 13 years of schooling, leading to a diploma at university level. Both groups were administered a short neuropsychological battery including standardized tests for vigilance, alertness and divided attention. None of the tasks showed differences between the groups. Patients were also classified using the US census categories into low occupations (student, housewife, unskilled/semiskilled, skilled trade or craft, clerical/office worker) and high occupations (manager business/government and professional/technical), where the occupational attainment categories are based on the cognitive complexity and cognitive effort needed to carry out the job efficiently. They were then further divided into three groups: low occupation and low education, low occupation and high education, and high occupation and high education. The researchers found that high speed PASAT versions were more suitable for identifying compensatory capacities compared to low speed PASAT versions. MS patients with low education performed worse than matched healthy controls at faster PASAT speeds.

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