Genetic transmission of reading ability

Suzanne C. Swagerman, Elsje van Bergen, Conor Dolan, Eco J.C. de Geus, Marinka M.G. Koenis, Hilleke E. Hulshoff Pol, Dorret I. Boomsma

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

Reading is the processing of written language. Family resemblance for reading (dis)ability might be due to transmission of a genetic liability or due to family environment, including cultural transmission from parents to offspring. Familial-risk studies exploring neurobehavioral precursors for dyslexia and twin studies can only speak to some of these issues, but a combined twin-family study can resolve the nature of the transmitted risk. Word-reading fluency scores of 1100 participants from 431 families (with twins, siblings and their parents) were analyzed to estimate genetic and environmental sources of variance, and to test the presence of assortative mating and cultural transmission. Results show that variation in reading ability is mainly caused by additive and non-additive genetic factors (64%). The substantial assortative mating (rfather–mother = 0.38) has scientific and clinical implications. We conclude that parents and offspring tend to resemble each other for genetic reasons, and not due to cultural transmission.

Original languageEnglish
Pages (from-to)3-8
Number of pages6
JournalBrain and Language
Volume172
DOIs
Publication statusPublished - 1 Sep 2017
Externally publishedYes

Cite this

Swagerman, S. C., van Bergen, E., Dolan, C., de Geus, E. J. C., Koenis, M. M. G., Hulshoff Pol, H. E., & Boomsma, D. I. (2017). Genetic transmission of reading ability. Brain and Language, 172, 3-8. https://doi.org/10.1016/j.bandl.2015.07.008