Mind the gap between both hands: evidence for internal finger-based number representations in children's mental calculation.

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  • Author(s): Domahs F;Domahs F; Krinzinger H; Willmes K
  • Source:
    Cortex; a journal devoted to the study of the nervous system and behavior [Cortex] 2008 Apr; Vol. 44 (4), pp. 359-67. Date of Electronic Publication: 2007 Dec 23.
  • Publication Type:
    Journal Article; Multicenter Study; Research Support, Non-U.S. Gov't
  • Language:
    English
  • Additional Information
    • Source:
      Publisher: Masson Country of Publication: Italy NLM ID: 0100725 Publication Model: Print-Electronic Cited Medium: Print ISSN: 0010-9452 (Print) Linking ISSN: 00109452 NLM ISO Abbreviation: Cortex Subsets: MEDLINE
    • Publication Information:
      Publication: Milan : Masson
      Original Publication: Varese.
    • Subject Terms:
      Child Development* ; Concept Formation* ; Learning* ; Mathematics* ; Problem Solving*; Child ; Child Behavior ; Fingers ; Humans ; Imagination ; Longitudinal Studies ; Mental Processes ; Pattern Recognition, Physiological ; Reference Values
    • Abstract:
      At a certain stage of development, virtually all children use some kind of external finger-based number representation. However, only little is known about how internal traces of this early external representation may still influence calculation even when finger calculation ceases to be an efficient tool in mental calculation. In the present study, we provide evidence for a disproportionate number of split-five errors (i.e., errors with a difference of +/-5 from the correct result) in mental addition and subtraction (e.g., 18 - 7 = 6). We will argue that such errors may have different origins. For complex problems and initially also for simple problems they are due to failure to keep track of 'full hands' in counting or calculation procedures. However, for simple addition problems split-five errors may later also be caused by mistakes in directly retrieving the result from declarative memory. In general, the present results are interpreted in terms of a transient use of mental finger patterns - in particular the whole hand pattern - in children's mental calculation.
    • Publication Date:
      Date Created: 20080405 Date Completed: 20080612 Latest Revision: 20091111
    • Publication Date:
      20240829
    • Accession Number:
      10.1016/j.cortex.2007.08.001
    • Accession Number:
      18387566