Speaking two languages with different number naming systems: What implications for magnitude judgments in bilinguals at different stages of language acquisition?
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Differences between languages in terms of number naming systems may lead to performance differences in number processing. The current study focused on differences concerning the order of decades and units in two-digit number words (i.e., unit-decade order in German but decade-unit order in French) and how they affect number magnitude judgments. Participants performed basic numerical tasks, namely two-digit number magnitude judgments, and we used the compatibility effect (Nuerk et al. in Cognition 82(1):B25–B33, 2001) as a hallmark of language influence on numbers. In the first part we aimed to understand the influence of language on compatibility effects in adults coming from German or French monolingual and German–French bilingual groups (Experiment 1). The second part examined how this language influence develops at different stages of language acquisition in individuals with increasing bilingual proficiency (Experiment 2). Language systematically influenced magnitude judgments such that: (a) The spoken language(s) modulated magnitude judgments presented as Arabic digits, and (b) bilinguals’ progressive language mastery impacted magnitude judgments presented as number words. Taken together, the current results suggest that the order of decades and units in verbal numbers may qualitatively influence magnitude judgments in bilinguals and monolinguals, providing new insights into how number processing can be influenced by language(s).
KeywordsBilingualism Number words Magnitude judgments Language acquisition
The current research was funded by the Luxembourgish Fund for Scientific Research (FNR, Luxembourg) in the framework of the LangNum CORE project. The authors declare no conflict of interest that might be interpreted as influencing the research, and APA ethical standards were followed in the conduct of this work. We especially thank Prof. Alain Content who allowed us to test in his laboratory. We gratefully thank all the participants, the schools for their permission to recruit student participants and the student helpers for their support in the data collection.
- Baayen RH, Milin P (2010) Analyzing reaction times. Int J Psychol Res 3(2):12–28Google Scholar
- Butterworth B (1999) The mathematical brain. Macmillon, LondonGoogle Scholar
- Feldman LB, Kostić A, Basnight-Brown DM, Durdević DF, Pastizzo MJ (2010) Morphological facilitation for regular and irregular verb formations in native and non-native speakers: Little evidence for two distinct mechanisms. Biling Lang Cogn 13(02):119. doi: 10.1017/S1366728909990459 CrossRefGoogle Scholar
- Macizo P, Herrera A (2008) The effect of number codes in the comparison task of two-digit numbers. Psicológica 29:1–34Google Scholar
- Marslen-Wilson WD (2007) Processes in language comprehension. The Oxford handbook of psycholinguistics 11:175Google Scholar
- Nuerk H-C, Willmes K (2005) On the magnitude representations of two-digit numbers. Psychol Sci 7(1):52–72Google Scholar
- Nuerk H-C, Weger U, Willmes K (2002) A unit-decade compatibility effect in German number words. Current Psychol Lett Behav Brain Cognit 7:19–38Google Scholar