All three groups differed significantly on expressive vocabulary, with non-native signers scoring lowest¶

Claim · All claims
Evidence · 1 study · associational r2 · q3
Currency · newest study 2015 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i? On the Expressive One Word Picture Vocabulary Test, non-native signers scored below native signers, who scored below hearing children. → Marshall C 2015

Evidence¶

Marshall C 2015¶

Marshall C, Jones A, Denmark T, Mason K, Atkinson J, Botting N and Morgan G (2015) Deaf children's non-verbal working memory is impacted by their language experience. Front. Psychol. 6:527. https://doi.org/10.3389/fpsyg.2015.00527

q3 · i? · associational · r2

ANCOVA controlling for age and WASI score on the Expressive One Word Picture Vocabulary Test showed a highly significant effect of group, F(2, 54) = 34.829, p < 0.001, with all three pairwise comparisons significant.

"this was driven by all three groups being significantly different from one another: non-native signer < native signer, p = 0.029, non-native signer < hearing, p = 0.001, and native signer < hearing, p = 0.009."

Discussion¶

Related Claims¶

• Non-native signers entering a signing school before age 6 had better ASL abilities than those entering later, but did not equal native signers — related
• Deaf non-native signers scored lower than hearing children on executive-loaded non-verbal working memory tasks, while deaf native signers did not differ from hearing children — related
• Native signers of ASL show more proficient bilingual abilities than non-native signers — related
• Vocabulary scores predicted executive-loaded non-verbal working memory scores beyond age and non-verbal reasoning — related