A deficit for arithmetical procedures: Lack of knowledge or lack of monitoring?

Carlo Semenza, Laura Miceli, Luisa Girelli

Research output: Contribution to journalArticlepeer-review


A patient is described with a specific deficit for arithmetical procedures. Unlike in previously described cases, where the observed problems could be attributed to the systematic application of disturbed algorithms, this patient's difficulty seems to stem from an inability to monitor the sequence of operations that calculation procedures specify. Criteria are provided for distinguishing impairments in written calculation due to the application of defective knowledge of the procedures from those determined by lack of monitoring. The role of monitoring and control processes in different calculation components is also discussed.

Original languageEnglish
Pages (from-to)483-498
Number of pages16
Issue number3
Publication statusPublished - 1997

ASJC Scopus subject areas

  • Neuroscience(all)
  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology
  • Cognitive Neuroscience

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