Does Slowed Processing Speed Account for Executive Deficits in Multiple Sclerosis? Evidence From Neuropsychological Performance and Structural Neuroimaging. Leavitt VM, Wylie G, Krch D, Chiaravalloti N, DeLuca J, Sumowski JF Rehabil Psychol. 2014 Aug 18. PMID: 25133903. Abstract CommentRecommendBookmarkWatch