Friday, May 2, 2014

Sixty-four or four-and-sixty? The influence of language and working memory on children's number transcoding

 2014 Apr 11;5:313. eCollection 2014.

Sixty-four or four-and-sixty? The influence of language and working memory on children's number transcoding.

Author information

  • 1Department of Experimental Psychology, Ghent University Ghent, Belgium.
  • 2Department of Experimental-Clinical and Health Psychology, Ghent University Ghent, Belgium.
  • 3Code, Expertise Centre for Development and Learning and Department of Applied Psychology, Thomas More University College Antwerp, Belgium.

Abstract

Number transcoding (e.g., writing 64 when hearing "sixty-four") is a basic numerical skill; rather faultlessly performed in adults, but difficult for children. In the present study, children speaking Dutch (an inversed number language) and French (a non-inversed number language) wrote Arabic digits to dictation. We also tested their IQ and their phonological, visuospatial, and executive working memory. Although the number of transcoding errors (e.g., hearing 46 but writing 56) was equal in both groups, the number of inversion errors (e.g., hearing 46 but writing 64) was significantly higher in Dutch-speaking than in French-speaking children. Regression analyses confirmed that language was the only significant predictor of inversion errors. Working-memory components, in contrast, were the only significant predictors of transcoding errors. Executive resources were important in all children. Less-skilled transcoders also differed from more-skilled transcoders in that they used semantic rather than asemantic transcoding routes. Given the observed relation between number transcoding and mathematics grades, current findings may provide useful information for educational and clinical settings.

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