Encyclopedia of Clinical Neuropsychology

2018 Edition
| Editors: Jeffrey S. Kreutzer, John DeLuca, Bruce Caplan

Anomalous Dominance

  • John E. MendozaEmail author
Reference work entry
DOI: https://doi.org/10.1007/978-3-319-57111-9_677


Mixed dominance


Anomalous dominance describes any pattern of cerebral organization of function in which the left hemisphere is not primarily responsible for initiating propositional speech and processing written or spoken language.

Current Knowledge

Since the left hemisphere primacy for language is typical of most right-handers (who represent the vast majority of the population), it is considered to be the “dominant” pattern of brain organization. Hence, any pattern that differs from this is considered to be anomalous. Most deviations occur in left-handers, approximately 30% of whom exhibit some form of anomalous dominance for language where these functions are organized either primarily in the right hemisphere (“reversed dominance”) or are more bilaterally represented. Although anomalous dominance can occur in right-handers, this is rare and, when present, is often a consequence of some early developmental defect or brain trauma. Other associations that have been...

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References and Readings

  1. Geschwind, N., & Galaburda, A. (1985). Cerebral lateralization. Archives of Neurology, 42, 428–459; 521–552; 634–654.PubMedCrossRefGoogle Scholar
  2. Geschwind, N., & Galaburda, A. M. (1987). Cerebral lateralization: Biological mechanisms, associations, and pathology. Cambridge, MA: MIT Press.Google Scholar
  3. Herron, J. (Ed.). (1980). Neuropsychology of left-handedness. New York: Academic.Google Scholar

Copyright information

© Springer International Publishing AG, part of Springer Nature 2018

Authors and Affiliations

  1. 1.Department of Psychiatry and NeuroscienceTulane Medical School and SE Louisiana Veterans Healthcare SystemNew OrleansUSA