|An important issue is the frequent underestimation or minimization of the heterogeneity of neuropsychological impairment in MS patients. This is related to the strong temptation to apply to MS studies approaches which were previously successful in neurodegenerative brain diseases in elderly patients. It seems also mandatory to incorporate scoring methods that aim to identify neuropsychological patterns specific of MS. In this issue of the Journal, we report one such effort, which specifically was able to highlight a link between cognitive slowing and memory impairment in MS. Our results suggest the importance of further systematic characterization of cognitive impairment in MS by developing and using tests targeting specific cognitive processes.
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