scholarly journals Asymmetries in the processing of Arabic digits and number words

2004 ◽  
Vol 32 (1) ◽  
pp. 164-171 ◽  
Author(s):  
Markus F. Damian
Keyword(s):  
Number Words ◽  
Arabic Digits

scholarly journals The association between number magnitude and space is dependent on notation: Evidence from an adaptive perceptual orientation task

2019 ◽  
Vol 5 (1) ◽  
pp. 38-54
Author(s):  
Tianwei Gong ◽  
Baichen Li ◽  
Limei Teng ◽  
Zijun Zhou ◽  
Xuefei Gao ◽  
...  
Keyword(s):  
Judgment Task ◽  
Snarc Effect ◽  
Number Word ◽  
Reaction Time Difference ◽  
Number Words ◽  
Number Magnitude ◽  
Spatial Response ◽  
Orientation Task ◽  
Arabic Digits ◽  
Perceptual Orientation

Research on adults' numerical abilities suggests that number representations are spatially oriented. This association of numbers with spatial response is referred to as the SNARC (i.e., spatial–numerical association of response codes) effect. The notation-independence hypothesis of numeric processing predicts that the SNARC effect will not vary with notation (e.g., Arabic vs. number word). To test such assumption, the current study introduced an adaptive experimental procedure based on a simple perceptual orientation task that can automatically smooth out the mean reaction time difference between Arabic digits and traditional Chinese number. We found that the SNARC effect interacted with notation, showing a SNARC effect for Arabic digits, but not for verbal number words. The results of this study challenged the commonly held view that notation does not affect numerical processes associated with spatial representations. We introduced a parallel model to explain the notation-dependent SNARC effect in the perceptual orientation judgment task.

scholarly journals Jargon in reading aloud sparing Arabic digits but not number words

2015 ◽  
Vol 6 ◽  
Author(s):  
Semenza Carlo ◽  
Garzon Martina ◽  
Passarini Laura ◽  
Meneghello Francesca ◽  
Menichelli Alina
Keyword(s):  
Reading Aloud ◽  
Number Words ◽  
Arabic Digits

scholarly journals Arabic digits and spoken number words: Timing modulates the cross-modal numerical distance effect

2019 ◽  
Vol 72 (11) ◽  
pp. 2632-2646 ◽  
Author(s):  
Chia-Yuan Lin ◽  
Silke M Göbel
Keyword(s):  
Response Times ◽  
Distance Effect ◽  
Stimulus Presentation ◽  
Simultaneous Presentation ◽  
Matching Task ◽  
Numerical Distance ◽  
Physical Similarity ◽  
Number Words ◽  
Arabic Digits ◽  
The Cross

Moving seamlessly between spoken number words and Arabic digits is common in everyday life. In this study, we systematically investigated the correspondence between auditory number words and visual Arabic digits in adults. Auditory number words and visual Arabic digits were presented concurrently or sequentially and participants had to indicate whether they described the same quantity. We manipulated the stimulus onset asynchronies (SOAs) between the two stimuli (Experiment 1: −500 ms to +500 ms; Experiment 2: −200 ms to +200 ms). In both experiments, we found a significant cross-modal distance effect. This effect was strongest for simultaneous stimulus presentation and decreased with increasing SOAs. Numerical distance emerged as the most consistent significant predictor overall, in particular for simultaneous presentation. However, physical similarity between the stimuli was often a significant predictor of response times in addition to numerical distance, and at longer SOAs, physical similarity between the stimuli was the only significant predictor. This shows that SOA modulates the extent to which participants access quantity representations. Our results thus support the idea that a semantic quantity representation of auditory and visual numerical symbols is activated when participants perform a concurrent matching task, while at longer SOAs participants are more likely to rely on physical similarity between the stimuli. We also investigated whether individual differences in the efficiency of the cross-modal processing were related to differences in mathematical performance. Our results are inconclusive about whether the efficiency of cross-format numerical correspondence is related to mathematical competence in adults.

scholarly journals The Development of Arabic Digit Knowledge in 4- to 7-Year-Old Children

2015 ◽  
Vol 1 (1) ◽  
pp. 21-37 ◽  
Author(s):  
Birgit Knudsen ◽  
Martin H. Fischer ◽  
Anne Henning ◽  
Gisa Aschersleben
Keyword(s):  
Individual Performance ◽  
Ordinal Position ◽  
Developmental Trajectory ◽  
Group Differences ◽  
Numerical Magnitude ◽  
Number Words ◽  
Physical Magnitude ◽  
Mathematical Career ◽  
Arabic Digits ◽  
Symbolic Number

Recent studies indicate that Arabic digit knowledge rather than non-symbolic number knowledge is a key foundation for arithmetic proficiency at the start of a child’s mathematical career. We document the developmental trajectory of 4- to 7-year-olds’ proficiency in accessing magnitude information from Arabic digits in five tasks differing in magnitude manipulation requirements. Results showed that children from 5 years onwards accessed magnitude information implicitly and explicitly, but that 5-year-olds failed to access magnitude information explicitly when numerical magnitude was contrasted with physical magnitude. Performance across tasks revealed a clear developmental trajectory: children traverse from first knowing the cardinal values of number words to recognizing Arabic digits to knowing their cardinal values and, concurrently, their ordinal position. Correlational analyses showed a strong within-child consistency, demonstrating that this pattern is not only reflected in group differences but also in individual performance.

It Takes Just One Word to Quash a SNARC

2009 ◽  
Vol 56 (5) ◽  
pp. 361-366 ◽  
Author(s):  
Martin H. Fischer ◽  
Samuel Shaki ◽  
Alexander Cruise
Keyword(s):  
Control Experiment ◽  
Classification Performance ◽  
Snarc Effect ◽  
Reading Habit ◽  
Reading Habits ◽  
Number Concepts ◽  
Number Words ◽  
Russian Word ◽  
Hebrew Word ◽  
Arabic Digits

Our directional reading habit seems to contribute to the widely reported association of small numbers with left space and larger numbers with right space (the spatial-numerical association of response codes, SNARC, effect). But how can this association be so flexible when reading habits are not? To address this question, we asked bilingual Russian-Hebrew readers to classify numbers by parity and alternated the number format from trial to trial between written words and Arabic digits. The number words were randomly printed in either Cyrillic or Hebrew script, thus inducing left-to-right or right-to-left reading, respectively. Classification performance indicated that the digits were spatially mapped when they followed a Russian word but not when they followed a Hebrew word. An auditory control experiment revealed left-to-right SNARC effects with different strengths in both languages. These results suggest that the SNARC effect reflects recent spatial experiences, cross-modal associations, and long-standing directional habits but not an attribute of the number concepts themselves.

Lexical and semantic connections in number words translation

2017 ◽  
Vol 22 (1) ◽  
pp. 177-190
Author(s):  
AMPARO HERRERA
Keyword(s):  
Facilitatory Effect ◽  
Number Word ◽  
Lower Range ◽  
Number Words ◽  
Forward Translation ◽  
Arabic Digits ◽  
Word Translation ◽  
L1 And L2 ◽  
L1 English ◽  
Naming Tasks

The present study investigated the influence of lexical links and conceptual mediation in number word translation. In four experiments, a semantic blocking paradigm was used with numerical stimuli and stimuli from other non-number categories. The performance of Spanish L1–English L2 bilinguals was examined in backward and forward translation (Experiment 1 and 3), in naming Arabic digits and pictures (Experiment 2A) and in reading L1 and L2 words (Experiment 2B). The blocked context produced a facilitatory effect for numerical stimuli in the lower range. This result contrasts with the interference effect observed for stimuli from non-number categories in translation and naming tasks. These results are interpreted to mean that the translation of number words, particularly those in the lower range of the numeric sequence, takes place with a large influence of the lexical connections. It supports the suggestions that the influence of processing routes depends on the type of items.

scholarly journals Tactile to visual number priming in the left intraparietal cortex of sighted Braille readers

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Katarzyna Rączy ◽  
Maria Czarnecka ◽  
Małgorzata Paplińska ◽  
Guido Hesselmann ◽  
André Knops ◽  
...  
Keyword(s):  
Cortical Region ◽  
Intraparietal Sulcus ◽  
Number Words ◽  
Magnitude Processing ◽  
Repetition Suppression ◽  
Sensory Modalities ◽  
Probe Distance ◽  
Arabic Digits ◽  
Left Parietal Cortex ◽  
Visual Number

Abstract Numbers can be presented in different notations and sensory modalities. It is currently debated to what extent these formats overlap onto a single representation. We asked whether such an overlap exists between symbolic numbers represented in two sensory modalities: Arabic digits and Braille numbers. A unique group of sighted Braille readers underwent extensive Braille reading training and was tested in an fMRI repetition-suppression paradigm with tactile Braille digit primes and visual Arabic digit targets. Our results reveal cross-modal priming: compared to repetition of two different quantities (e.g., Braille “5” and Arabic “2”), repetition of the same quantity presented in two modalities (e.g., Braille “5” and Arabic “5”) led to a reduction of activation in several sub-regions of the Intraparietal Sulcus (IPS), a key cortical region for magnitude processing. Thus, in sighted Braille readers, the representations of numbers read by sight and by touch overlap to a degree sufficient to cause repetition suppression. This effect was modulated by the numerical prime-probe distance. Altogether this indicates that the left parietal cortex hosts neural assemblies that are sensitive to numerical information from different notations (number words or Arabic digits) and modalities (tactile and visual).

scholarly journals Making Sense of Number Words and Arabic Digits: Does Order Count More?

2019 ◽  
Vol 91 (5) ◽  
pp. 1456-1470 ◽  
Author(s):  
Francesco Sella ◽  
Daniela Lucangeli ◽  
Roi Cohen Kadosh ◽  
Marco Zorzi
Keyword(s):  
Number Words ◽  
Making Sense ◽  
Arabic Digits

scholarly journals Cross-Format Integration of Auditory Number Words and Visual-Arabic Digits: An ERP Study

2021 ◽  
Vol 12 ◽  
Author(s):  
Sabrina Finke ◽  
Ferenc Kemény ◽  
Francina J. Clayton ◽  
Chiara Banfi ◽  
Anna F. Steiner ◽  
...  
Keyword(s):  
Neural Correlates ◽  
Number Processing ◽  
Task Demands ◽  
Event Related Potential ◽  
Number Word ◽  
Numerical Identity ◽  
Numerical Information ◽  
Number Words ◽  
Semantic Access ◽  
Arabic Digits

Converting visual-Arabic digits to auditory number words and vice versa is seemingly effortless for adults. However, it is still unclear whether this process takes place automatically and whether accessing the underlying magnitude representation is necessary during this process. In two event-related potential (ERP) experiments, adults were presented with identical (e.g., “one” and 1) or non-identical (e.g., “one” and 9) number pairs, either unimodally (two visual-Arabic digits) or cross-format (an auditory number word and a visual-Arabic digit). In Experiment 1 (N=17), active task demands required numerical judgments, whereas this was not the case in Experiment 2 (N=19). We found pronounced early ERP markers of numerical identity unimodally in both experiments. In the cross-format conditions, however, we only observed late neural correlates of identity and only if the task required semantic number processing (Experiment 1). These findings suggest that unimodal pairs of digits are automatically integrated, whereas cross-format integration of numerical information occurs more slowly and involves semantic access.

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