Overlapping genetic and child-specific nonshared environmental influences on listening comprehension, reading motivation, and reading comprehension

Journal of Communication Disorders
Victoria J Schenker, Stephen A Petrill

Abstract

This study investigated the genetic and environmental influences on observed associations between listening comprehension, reading motivation, and reading comprehension. Univariate and multivariate quantitative genetic models were conducted in a sample of 284 pairs of twins at a mean age of 9.81 years. Genetic and nonshared environmental factors accounted for statistically significant variance in listening and reading comprehension, and nonshared environmental factors accounted for variance in reading motivation. Furthermore, listening comprehension demonstrated unique genetic and nonshared environmental influences but also had overlapping genetic influences with reading comprehension. Reading motivation and reading comprehension each had unique and overlapping nonshared environmental contributions. Therefore, listening comprehension appears to be related to reading primarily due to genetic factors whereas motivation appears to affect reading via child-specific, nonshared environmental effects.

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Citations

Mar 3, 2018·American Journal of Speech-language Pathology·Janet WebsterMaria Garraffa
Nov 28, 2020·Neuroscience and Biobehavioral Reviews·Chiara AndreolaSimona Scaini

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