French base-20 number words for numbers over 70 disproportionately impair addition performance in French¶

Claim · All claims
Evidence · 2 studies · 2 causal r2 · q3 · i3 large
Currency · newest study 2015 · not yet checked against its sources · not reviewed by a person

Subclaims¶

q3 i3 The problem size effect on accuracy was significant in French but not in German for complex additions. → Van Rinsveld A 2015 q3 i? The language × problem size interaction persisted after standardizing data per language, ruling out general proficiency differences as the explanation. → Van Rinsveld A 2015 (2)

Evidence¶

Van Rinsveld A 2015¶

Van Rinsveld A, Brunner M, Landerl K, Schiltz C and Ugen S (2015) The relation between language and arithmetic in bilinguals: insights from different stages of language acquisition. Front. Psychol. 6:265. https://doi.org/10.3389/fpsyg.2015.00265

q3 · i3 · causal · r2

Pairwise comparisons of the problem size × task language interaction showed the over-70 problem size effect on CRs was significant only in French (η² = 0.363), not German (p = 0.091).

"In terms of CRs, problem size effect was only significant in French [ F(1, 185) = 105. 613; p < 0. 001; η 2 = 0. 363] but not in German [ F(1, 185) = 2. 878; p = 0. 091; η 2 = 0. 015]"

Van Rinsveld A 2015 (2)¶

Van Rinsveld A, Brunner M, Landerl K, Schiltz C and Ugen S (2015) The relation between language and arithmetic in bilinguals: insights from different stages of language acquisition. Front. Psychol. 6:265. https://doi.org/10.3389/fpsyg.2015.00265

q3 · i? · causal · r2

A supplementary standardized re-analysis ruled out weaker French proficiency as the cause of the larger French problem size effect; the interaction remained significant.

"interactions of language and problem size remained significant after standardization of the data per language, suggest- ing that differences of problem size effect observed between lan- guages in raw data are not a consequence of bilinguals' differences between languages in terms of language mastery"

Discussion¶

Related Claims¶

• Complex additions are solved faster and more accurately in German than French across all five bilingual proficiency stages — related
• Simple additions are retrieved with equal accuracy in both languages from grade 10 onward, though still faster in German — related
• Language effects on complex-addition accuracy are larger in auditory than visual presentation format — related
• Calculation complexity strongly modulates language, format and age-group effects on bilingual arithmetic — related