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Language and reading impairments are associated with increased prevalence of non-right-handedness.

ABSTRACT: Handedness has been studied for association with language-related disorders because of its link with language hemispheric dominance. No clear pattern has emerged, possibly because of small samples, publication bias, and heterogeneous criteria across studies. Non-right-handedness (NRH) frequency was assessed in N = 2503 cases with reading and/or language impairment and N = 4316 sex-matched controls identified from 10 distinct cohorts (age range 6-19 years old; European ethnicity) using a priori set criteria. A meta-analysis (Ncases  = 1994) showed elevated NRH % in individuals with language/reading impairment compared with controls (OR = 1.21, CI = 1.06-1.39, p = .01). The association between reading/language impairments and NRH could result from shared pathways underlying brain lateralization, handedness, and cognitive functions.

SUBMITTER: Abbondanza F 

PROVIDER: S-EPMC10330064 | biostudies-literature | 2023 Jul-Aug

REPOSITORIES: biostudies-literature

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Language and reading impairments are associated with increased prevalence of non-right-handedness.

Abbondanza Filippo F   Dale Philip S PS   Wang Carol A CA   Hayiou-Thomas Marianna E ME   Toseeb Umar U   Koomar Tanner S TS   Wigg Karen G KG   Feng Yu Y   Price Kaitlyn M KM   Kerr Elizabeth N EN   Guger Sharon L SL   Lovett Maureen W MW   Strug Lisa J LJ   van Bergen Elsje E   Dolan Conor V CV   Tomblin J Bruce JB   Moll Kristina K   Schulte-Körne Gerd G   Neuhoff Nina N   Warnke Andreas A   Fisher Simon E SE   Barr Cathy L CL   Michaelson Jacob J JJ   Boomsma Dorret I DI   Snowling Margaret J MJ   Hulme Charles C   Whitehouse Andrew J O AJO   Pennell Craig E CE   Newbury Dianne F DF   Stein John J   Talcott Joel B JB   Bishop Dorothy V M DVM   Paracchini Silvia S  

Child development 20230213 4

Handedness has been studied for association with language-related disorders because of its link with language hemispheric dominance. No clear pattern has emerged, possibly because of small samples, publication bias, and heterogeneous criteria across studies. Non-right-handedness (NRH) frequency was assessed in N = 2503 cases with reading and/or language impairment and N = 4316 sex-matched controls identified from 10 distinct cohorts (age range 6-19 years old; European ethnicity) using a priori s  ...[more]

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