Gender Ratios Among Reading‐Disabled Children and Their Siblings as a Function of Parental Impairment

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Abstract
Gender ratios are reported for 374 reading‐disabled probands and their S.M siblings included in five independent studies of reading disability. Ratios were tabulated for each study as a function of parental impairment (neither parent affected, mother only affected, father only affected, and both parents affected), Results reveal, a small excess of male probands in referred and clinic samples of reading‐disabled children, bin not in research‐identified samples. Gender ratios among siblings of reading‐disabled probands are approximately 1:1. In addition, combined results indicate that gender ratios of neither probands nor their siblings vary substantially as a function of parental impairment.