Prevalence and heritability of parental-reported speech and/or language difficulties in a Swedish population-based twin sample.

ABSTRACT:

Background

Research on genetic and environmental influences on speech and/or language difficulties (SaLD) is sparse, with inconsistent heritability estimates. We aimed to estimate the prevalence of parental reported SaLD and the relative contributions of genetic and environmental factors for the phenotype using a Swedish population-based twin sample. We hypothesized that there would be a stronger genetic than environmental effect on SaLD.

Methods

Data were collected from The Child and Adolescent Twin Study in Sweden. The study sample included 16,774 twin pairs (16,946 males, 16,602 females), of which 5141 were monozygotic, 5861 dizygotic (DZ), and 5772 opposite-sex DZ pairs. The language items in the Autism-Tics, Attention-Deficit Hyperactivity Disorder, and other Comorbidit

SUBMITTER: Keijser R 

PROVIDER: S-EPMC11472810 | biostudies-literature | 2024 Sep

REPOSITORIES: biostudies-literature