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Cortical Thickness in bilingual and monolingual children: Relationships to language use and language skill
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In: Neuroimage (2021)
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Inconsistency of Findings due to Low Power: A Structural MRI Study of Bilingualism
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In: Brain Lang (2019)
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Abstract:
Research on structural brain differences between monolinguals and bilinguals remains inconsistent, and this has been proposed by some to be due in part to inadequate sample sizes. The aim of the present study is to reveal the expected degrees of uncertainty among neuroimaging findings by analyzing random samples of varying sizes from a larger-than-average sample. Bilinguals (n = 216) were compared with monolinguals (n = 146) using grey matter volume measures across region-of-interest tests. Variability among findings were compared with the true full-sample findings, and taken in the context of expected differences within the larger bilingualism neuroimaging literature. Results demonstrate excessive variability across the lowest sample sizes (e.g. samples totaling 20 – 80 participants), and this is explored through the trends of subsample outcomes and effect sizes across sample sizes. The results of this study illustrate the influences of power on expected variability among sample findings.
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Keyword:
Article
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URL: http://www.ncbi.nlm.nih.gov/pubmed/31238122 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8590736/ https://doi.org/10.1016/j.bandl.2019.104642
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Anterior insular thickness predicts speech sound learning ability in bilinguals.
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In: NeuroImage, vol 165 (2018)
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Becoming a balanced, proficient bilingual: Predictions from age of acquisition & genetic background
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Symbiosis, Parasitism and Bilingual Cognitive Control: A Neuroemergentist Perspective
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Bilingualism Influences Structural Indices of Interhemispheric Organization.
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Bilingual Cortical Control of Between- and Within-Language Competition
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Anterior insular thickness predicts speech sound learning ability in bilinguals☆
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Degree of Foreign Accent in Bilingual Children Predicts Surface Area of the Bilateral Superior Temporal Gyrus ...
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Individual differences in the bilingual brain: The role of language background and DRD2 genotype in verbal and non-verbal cognitive control
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Bilingualism Influences Structural Indices of Interhemispheric Organization
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Neural Correlates of Single Word Reading in Bilingual Children and Adults
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Beyond the bilingual advantage: The potential role of genes and environment on the development of cognitive control
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