Vitamin supplements and purported learning enhancement in mentally retarded children.
Menolascino F J, Donaldson J Y, Gallagher T F, +5 more·Journal of nutritional science and vitaminology
Dr. Ruth Harrell and her colleagues conducted a study in 1981 in which the administration of high dosages of vitamins were determined to dramatically improve the intellectual functioning of mentally retarded children. This paper documents the efforts of its authors to replicate the Harrell et al. research and, although…