ArticleBrain and language2019
Inconsistency of findings due to low power: A structural MRI study of bilingualism.
Article in Brain and language, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
6 citing papers in PubMed.
- Neuroanatomical differences in early bilingual and monolingual children.bioRxiv : the preprint server for biology · 2026Article
- Does Diglossia Impact Brain Structure? Data from Swiss German Early Diglossic Speakers.Brain sciences · 2024Article
- A Comparison of White Matter Brain Differences in Monolingual and Highly Proficient Multilingual Speakers.Neurobiology of language (Cambridge, Mass.) · 2024Article
- Cortical Thickness in bilingual and monolingual children: Relationships to language use and language skill.NeuroImage · 2021Article
- Age of acquisition impacts the brain differently depending on neuroanatomical metric.Human brain mapping · 2020Article
- A role for the cerebellum in the control of verbal interference: Comparison of bilingual and monolingual adults.PloS one · 2020Article
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Authors and funding
2 authors.
Funding
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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Registered trials
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