Normal Variation in Human Brain Organization: Relation to Handedness, Sex and Cognitive Abilities

  • Richard A. Harshman
  • Elizabeth Hampson
Part of the Wenner-Gren Center International Symposium Series book series (WGS)

Abstract

If the brains of some left handers are organized differently from the brains of right handers, might not their patterns of cognitive abilities also be different? While this seems plausible, it has been surprisingly difficult to demonstrate; previous findings have been inconsistent and often contradictory. Nonetheless, we will present evidence that substantial handedness-related cognitive differences do exist, and that previous inconsistencies can be resolved by taking other characteristics of the individual into account. The most interesting implications of this evidence go beyond the question of mere handedness effects. It turns out that we may have been operating under overly restrictive assumptions about the functional structure of the “normal” brain.

Keywords

Expense Left Handedness Metaphor Lawson 

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References

  1. Benbow, C.P. (in press). Physiological Correlates of Extreme Intellectual Precocity, Neuropsychologia.Google Scholar
  2. Benbow, C.P. and Stanley, J.C. (1983). Sex Differences in Mathematical Reasoning Ability: More Facts. Science, 222, 1029–1031.PubMedCrossRefGoogle Scholar
  3. Berenbaum, S.A. (1977). A Model of Individual Differences in Hemispheric Specialization and Cognitive Abilities, with Particular Reference to Sex and Handedness.Google Scholar
  4. Unpublished Doctoral Dissertation, University of California at Berkeley. (1978). Diss. Abstr. Int., 39. (University Microfilms, Ann Arbor, No. 7812488).Google Scholar
  5. Bryden, M.P. (1979). Evidence for Sex-Related Differences in Cerebral Organization. In Sex-Related Differences in Cognitive Functioning: Developmental Issues. (eds. M.A. Wittig and A.C. Petersen). Academic Press, New York.Google Scholar
  6. Bryden, M.P. (1982). Laterality: Functional Asymmetry in the Intact Brain. Academic Press, New York.Google Scholar
  7. Bryden, M.P. and Sprott, D.A. (1981). Statistical Determination of Degree of Laterality. Neuropsychologia, 19, 571–581.PubMedCrossRefGoogle Scholar
  8. Bryden, M.P., Hecaen, H. and DeAgostini, M. (1983). Patterns of Cerebral Organization. Brain & Lang., 20, 249–262.CrossRefGoogle Scholar
  9. Hardyck, C., Petrinovich, L.F. and Goldman, R.D. (1976). Left-Handedness and Cognitive Deficit. Cortex, 12, 266–279.PubMedCrossRefGoogle Scholar
  10. Harshman, R.A. (April, 1974). Meaning and Measurement of “Degree of Lateralization”. Paper presented at the 87th meeting of the Acoustical Society of America, New York. (1974). J. acoust. Soc. Am., 55, S10 (Abstract).Google Scholar
  11. Harshman, R. and Krashen, S. (1972). An “Unbiased” Prodecure for Comparing the Degree of Lateralization of Dichotically Presented Stimuli. UCLA Working Papers in Phonetics, 23, 3–12; 17–21. (University Microfilms, Ann Arbor, No. 10,085).Google Scholar
  12. Harshman, R.A. and Remington, R. (1976). Sex, Language and the Brain, Part Is A Review of the Literature on Adult Sex Differences in Lateralization. UCLA Working Papers in Phonetics, 31, 86–103. (University Microfilms, Ann Arbor, No. 10,085).Google Scholar
  13. Harshman, R.A., Hampson, E. and Berenbaum, S.A. (1983). Individual Differences in Cognitive Abilities and Brain Organization, Part I: Sex and Handedness Differences in Ability. Can. J. Psychol., 37, 144–192.PubMedCrossRefGoogle Scholar
  14. Harshman, R.A., Hampson, E. and Lundy, M.E. Individual Differences in Cognitive Abilities and Brain Organization, Part II: Dichotic Listening. Manuscript in preparation.Google Scholar
  15. Hecaen, H., DeAgostini, M. and Monzon-Montes, A. (1981). Cerebral Organization in Left-Handers. Brain & Lang., 12, 261–284.CrossRefGoogle Scholar
  16. Inglis, J. and Lawson, J.S. (1984). Handedness, Sex and Intelligence. Cortex, 20, 447–451.PubMedCrossRefGoogle Scholar
  17. Kertesz, A., Black, S.E., Polk, M. and Howell, J. (1986). Cerebral Asymmetries on Magnetic Resonance Imaging. Cortex, 22, 117–127.PubMedCrossRefGoogle Scholar
  18. Kimura, D. (1964). Left-Right Differences in the Perception of Melodies. Q. Jl. exp. Psychol., 16, 355–358.CrossRefGoogle Scholar
  19. Kimura, D. (1967). Functional Asymmetry of the Brain in Dichotic Listening. Cortex, Z, 163–178.CrossRefGoogle Scholar
  20. Kimura, D. (1983). Sex Differences in Cerebral Organization for Speech and Praxic Functions. Can. J. Psychol., 37, 19–35.PubMedCrossRefGoogle Scholar
  21. Kimura, D. and Harshman, R.A. (1984). Sex Differences in Brain Organization for Verbal and Non-Verbal Functions. In Progress in Brain Research, Vol. 61. (eds. G.J. DeVries, J.P.C. DeBruin, H.B.M. Uylings and M.A. Corner). Elsevier, Amsterdam.Google Scholar
  22. Levy, J. (1969). Possible Basis for the Evolution of Lateral Specialization of the Human Brain. Nature, 224, 614–615.PubMedCrossRefGoogle Scholar
  23. Levy, J. (1974). Psychobiological Implications of Bilateral Asymmetry. In Hemisphere Function in the Human Brain. (eds. S.J. Dimond and J.G. Beaumont). Wiley, New York.Google Scholar
  24. Levy, J. and Gur, R.C. (1980). Individual Differences in Psychoneurological Organization. In Neuropsychology of Left-Handedness. (ed. J. Herron). Academic Press, New York.Google Scholar
  25. Lewis, R.S. and Christiansen, L. (1986). Sex Differences in Intra- hemispheric Representation of Language in Normal Individuals. Society for Neuroscience Abstracts, 12, Part 1, 720.Google Scholar
  26. Lewis, R.S. and Harris, L.J. (1986). The Relationship Between Sex, Handedness, and Spatial Ability in High Academic Achievers. Manuscript submitted for publication.Google Scholar
  27. Mateer, C.A., Polen, S.B. and Ojemann, G.A. (1982). Sexual Variation in Cortical Localization of Naming as Determined by Stimu lation Mapping. Behav. & Brain Sciences, 5, 310–311.CrossRefGoogle Scholar
  28. McGlone, J. (1980). Sex Differences in Human Brain Asymmetry; A Critical Survey. Behav. & Brain Sciences, 3, 215–263.CrossRefGoogle Scholar
  29. Milner, B. (1974). Hemispheric Specialization: Scope and Limits. In The Neurosciences: Third Study Program. (eds. F.O. Schmitt and F.G. Worden). M.I.T. Press, Boston.Google Scholar
  30. Sanders, B., Wilson, J.R. and Vandenberg, S.G. (1982). Handedness and Spatial Ability. Cortex, 18, 79–90.PubMedCrossRefGoogle Scholar
  31. Springer, S.P. and Searleman, A. (1978). The Ontogeny of Hemispheric Specialization: Evidence from Dichotic Listening in Twins. Neuropsychologia, 16, 269–281.PubMedCrossRefGoogle Scholar
  32. Watkins, M.P. and Meredith, W. (1981). Spouse Similarity in Newlyweds with respect to Specific Cognitive Abilities, Socioeconomic Status, and Education. Behav. Genet.,11, 1–21.PubMedCrossRefGoogle Scholar
  33. Wilson, J.R. and Vandenberg, S.G. (1978). Sex Differences in Cognition: Evidence from the Hawaii Family Study. In Sex and Behavior: Status and Prospectus, (eds. T.E. McGill, D.A. Dewsbury and B.D. Sachs). Plenum Press, New York.Google Scholar
  34. Witelson, S.F. (1985). The Brain Connection: The Corpus Callosum is Larger in Left-Handers. Science, 229, 665–668.PubMedCrossRefGoogle Scholar
  35. Wood, G.J. and Harshman, R.A. (1986). Individual Differences in Interhemispheric Transfer of Simple Visual Information. Can. Psychol., 27(2a), 633.Google Scholar
  36. Yen, W.M. (1975). Independence of Hand Preference and Sex-Linked Genetic Effects on Spatial Performance. Percept. Mot. Skills, 41, 311–318.PubMedCrossRefGoogle Scholar

Copyright information

© The Wenner-Gren Center 1987

Authors and Affiliations

  • Richard A. Harshman
  • Elizabeth Hampson

There are no affiliations available

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