Title |
Spatial representations of numbers and letters in children
|
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Published in |
Frontiers in Psychology, January 2013
|
DOI | 10.3389/fpsyg.2013.00544 |
Pubmed ID | |
Authors |
Jan Lonnemann, Janosch Linkersdörfer, Telse Nagler, Marcus Hasselhorn, Sven Lindberg |
Abstract |
Different lines of evidence suggest that children's mental representations of numbers are spatially organized in form of a mental number line. It is, however, still unclear whether a spatial organization is specific for the numerical domain or also applies to other ordinal sequences in children. In the present study, children (n = 129) aged 8-9 years were asked to indicate the midpoint of lines flanked by task-irrelevant digits or letters. We found that the localization of the midpoint was systematically biased toward the larger digit. A similar, but less pronounced, effect was detected for letters with spatial biases toward the letter succeeding in the alphabet. Instead of assuming domain-specific forms of spatial representations, we suggest that ordinal information expressing relations between different items of a sequence might be spatially coded in children, whereby numbers seem to convey this kind of information in the most salient way. |
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