Exact and approximate arithmetic in an Amazonian indigene group. Pica, P., Lemer, C., Izard, V., & Dehaene, S. Science, 306(5695):499–503, 2004. doi abstract bibtex Is calculation possible without language? Or is the human ability for arithmetic dependent on the language faculty? To clarify the relation between language and arithmetic, we studied numerical cognition in speakers of Mundurukú, an Amazonian language with a very small lexicon of number words. Although the Mundurukú lack words for numbers beyond 5, they are able to compare and add large approximate numbers that are far beyond their naming range. However, they fail in exact arithmetic with numbers larger than 4 or 5. Our results imply a distinction between a nonverbal system of number approximation and a language-based counting system for exact number and arithmetic.
@Article{Pica2004,
author = {Pierre Pica and Cathy Lemer and V\'eronique Izard and Stanislas Dehaene},
journal = {Science},
title = {Exact and approximate arithmetic in an Amazonian indigene group.},
year = {2004},
number = {5695},
pages = {499--503},
volume = {306},
abstract = {Is calculation possible without language? Or is the human ability
for arithmetic dependent on the language faculty? To clarify the
relation between language and arithmetic, we studied numerical cognition
in speakers of Munduruk\'u, an Amazonian language with a very small
lexicon of number words. Although the Munduruk\'u lack words for numbers
beyond 5, they are able to compare and add large approximate numbers
that are far beyond their naming range. However, they fail in exact
arithmetic with numbers larger than 4 or 5. Our results imply a distinction
between a nonverbal system of number approximation and a language-based
counting system for exact number and arithmetic.},
doi = {10.1126/science.1102085},
institution = {Unit\'e Mixte de Recherche 7023 "Formal Structures of Language," CNRS and Paris VIII University, Paris, France.},
keywords = {Adult; Brazil; Child; Cognition; Culture; Humans; Indians, South American; Language; Mathematics; Vocabulary},
language = {eng},
medline-pst = {ppublish},
pmid = {15486303},
timestamp = {2010.12.04},
}
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