International Journal of Primatology

, Volume 23, Issue 6, pp 1155–1168 | Cite as

Factor Analysis of Multiple Measures of Hand Use in Captive Chimpanzees: An Alternative Approach to the Assessment of Handedness in Nonhuman Primates

  • Michael J. Wesley
  • Samuel Fernandez-Carriba
  • Autumn Hostetter
  • Dawn Pilcher
  • Sarah Poss
  • William D. Hopkins


We tested whether chimpanzee handedness could be characterized as either unidimensional or multidimensional when considered across multiple measures of hand use. We determined for each of 6 different tasks in a sample of 105 captive chimpanzees hand preferences, and subjected the individual hand preference scores to a factor analysis. Five of the 6 tasks loaded on two separate factors that accounted for 54% of the variance. To assess population-level handedness, we calculated handedness indices for the loadings on each factor, for the item loadings across all factors, and for all tasks including ones that did not load on any factor. There is significant population-level right handedness for all 4 indices, which suggests that chimpanzee handedness is multidimensional and not task specific.

Pan troglodytes handedness factor analysis laterality chimpanzee Great Apes non-human primates asymmetry 


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  1. Anderson, J. R., Degiorgio, C., Lamarque, C., and Fagot, J. (1996). A multi-task assessment of hand lateralization in capuchin monkeys (Cebus apella). Primates 37: 97–104.Google Scholar
  2. Aruguete, M. S., Ely, E. A., and King, J. E. (1992). Laterality in spontaneous motor activity of chimpanzees and squirrel monkeys. Am. J. Primato. 27. 177–188.Google Scholar
  3. Bard, K. A. (1996). Responsive Care: Behavioral Intervention for Nursery-Reared Chimpanzees. (Available from the Jane Goodall Institute, Ridgefield, CT 06877)Google Scholar
  4. Beck, C. H. M., and Barton, R. L. (1972). Deviation and laterality of hand preference in monkeys.Cortex 8: 339–363.Google Scholar
  5. Boesch, C. (1991). Handedness in wild chimpanzees. Int. J. Primatol. 6: 541–558.Google Scholar
  6. Bradshaw, J., and Rogers, L. J. (1993). The evolution of lateral asymmetries, language, tool use and intellect, Academic Press, San Diego.Google Scholar
  7. Byrne, R. W., and Byrne, J. M. (1991). Hand preferences in the skilled gathering tasks of mountain gorillas (Gorilla gorilla berengei). Cortex 27: 521–536.Google Scholar
  8. Colell, M., Segarra, M. D., and Sabater Pi, J. (1995a). Manual laterality in chimpanzees (Pan troglodytes) in complex tasks. J. Comp. Psychol 109: 298–307.Google Scholar
  9. Colell, M., Segarra, M. D., and Sabater Pi, J. (1995b). Hand preferences in chimpanzees (Pan troglodytes), bonobos (Pan paniuscus) and orangutans (Pongo pygmaeus) in food-reaching and other daily activities. Int. J. Primatol. 16: 413–434.Google Scholar
  10. Corballis, M. C. (1997). The genetics and evolution of handedness. Psychol. Rev. 104: 714–727.Google Scholar
  11. Diamond, A. C., and McGrew, W. C. (1994). True handedness in the cotton-top tamarin (Saguinus oedipus)? Primates 35: 69–77.Google Scholar
  12. Fagot, J., and Vauclair, J. (1991). Manual laterality in nonhuman primates:Adistinction between handedness and manual specialization. Psychol. Bull. 109: 76–89.Google Scholar
  13. Fagot, J., Drea, C. M., and Wallen, K. (1991). Asymmetrical hand use in rhesus monkeys (Macca mulatta) in tactually and visually regulated tasks. J. Comp. Psychol. 105: 260–268.Google Scholar
  14. Healey, J. M., Liederman, J., and Geschwind, N. (1986). Handedness is not a unideminsional trait. Cortex 22: 33–53.Google Scholar
  15. Heestand, J. (1986). Behavioral Lateralization in Four Species of Ape. Unpublished Doctoral Dissertation, University ofWashington.Google Scholar
  16. Hopkins, W. D. (1993). Posture and reaching in chimpanzees (Pan) and orangutans (Pongo).J. Comp. Psychol. 17: 162–168.Google Scholar
  17. Hopkins, W.D. (1994). Hand preferences for bimanual feeding in 140 captive chimpanzees (Pan troglodytes): Rearing and ontogenetic factors. Dev. Psychobiol. 27: 395–407.Google Scholar
  18. Hopkins, W.D. (1995a). Hand preferences in juvenile chimpanzees: Continuity in development.Dev. Psychol. 31: 619–625.Google Scholar
  19. Hopkins, W.D. (1995b). Hand preferences for a coordinated bimanual task in 110 chimpanzees: Cross-sectional analysis. J. Comp. Psychol. 109: 291–297.Google Scholar
  20. Hopkins, W.D. (1996). Chimpanzee handedness revisited: 54 years since Finch (1941). Psychon.Bull. Rev. 3: 449–457.Google Scholar
  21. Hopkins, W.D. (1999a). On the other hand: Statistical issues in the assessment and interpretation of hand preference data in non-human primates. Int. J. Primatol. 20: 851–856.Google Scholar
  22. Hopkins, W. D. (1999b). Heritability of hand preference in chimpanzees: Evidence from a partial interspecies cross-fostering study. J. Comp. Psychol. 113: 1–7.Google Scholar
  23. Hopkins, W. D., and Caribba, S. F. (2000). The effect of situational factors on hand preference in chimpanzees (Pan troglodytes). Neuropsychologia 38: 403–409.Google Scholar
  24. Hopkins, W. D., Dahl, J. F., and Pilcher, D. (2001). Genetic influence on the expression of hand preferences in chimpanzees (Pan troglodytes): Evidence in support of the right shift theory and developmental instability. Psychol. Sci. 12: 299–303.Google Scholar
  25. Hopkins, W. D., and de Waal, F. B. M. (1995). Behavioral laterality in captive bonobos (Pan paniscus): Replication and extension. Int. J. Primatol. 16: 261–276.Google Scholar
  26. Hopkins, W. D., and Leavens, D. A. (1998). Hand use and gestural communication in chimpanzees (Pan troglodytes). J. Comp. Psychol. 112: 95–99.Google Scholar
  27. Hopkins, W. D., and Morris, R. D. (1993). Handedness in great apes: A review of findings. Int.J. Primatol. 14: 1–25.Google Scholar
  28. Hopkins, W.D., and Pearson, K. (2000). Chimpanzee (Pan troglodytes) handedness: Variability across multiple measures of hand use. J. Comp. Psychol. 114: 126–135.Google Scholar
  29. Hopkins, W.D., and Rilling, J. K. (2000). A comparative MRI study of the relationship between neuroanatomical asymmetry and interhemispheric connectivity in primates: Implication for the evolution of functional asymmetries. Behav. Neurosci. 114: 739–748.Google Scholar
  30. Lehman, R. A. W. (1993). Manual preference in prosimians, monkeys, and apes. In Ward, J.P., and Hopkins, W. D. (eds), Primate Laterality: Current Behavioral Evidence of Primate Asymmetries, Springer, New York, pp. 107–124.Google Scholar
  31. MacNeilage, P. F., Studdert-Kennedy, M. G., and Lindblom, B. (1987). Primate handedness reconsidered. Behav. Brain Sci. 10: 247–303.Google Scholar
  32. Marchant, L. F., and McGrew, W. C. (1991). Laterality of function in apes: A meta-analysis of methods. J. Hum. Evol. 21: 425–438.Google Scholar
  33. Marchant, L. F., and McGrew, W. C. (1996). Laterality of limb function in chimpanzees in wild chimpanzees of Gombe National Park: Comprehensive study of spontaneous activities. J.Hum. Evol. 30: 427–443.Google Scholar
  34. Marchant, L. F., and McGrew, W. C., and Eibs-Eibesfeldt, I. (1995). Is human handedness universal? Ethological analysis from three different cultures. Ethology 101: 239–258.Google Scholar
  35. McGrew, W. C., and Marchant, L. F. (1994). Primate ethology: A perspective on human and nonhuman handedness. In Bock, P. K. (ed.), Handbook of Psychological Anthropology, Greenwood Press, Westport, CT, pp. 171–184.Google Scholar
  36. McGrew, W. C., and Marchant, L. F. (1997). On the other hand: Current issues in and metaanalysis of the behavioral laterality of hand function in nonhuman primates. Yearbook Phys. Anthropol. 40: 201–232.Google Scholar
  37. Morris, R. D., Hopkins, W. D., and Bolser-Gilmore, L. (1993). Assessment of hand preference in two language trained chimpanzees (Pan troglodytes): A multimethod analysis. J. Clin.Exp. Neuropsychol. 15: 487–502.Google Scholar
  38. Olson, D. A., Ellis, J. E., and Nadler, R. D. (1990). Hand preferences in captive gorillas, orangutans and gibbons. Am. J. Primatol. 20: 83–94.Google Scholar
  39. Provins, K. A. (1997). Handedness and speech: A critical reappraisal of the role of genetic and environmental factors in the cerebral lateralization of function. Psychol. Rev. 104: 554–571.Google Scholar
  40. Rilling, J. K., and Insel, T. R. (1999). Differential expansion of neural projection systems in primate brain evolution. NeuroReport 10: 1453–1459.Google Scholar
  41. Ringo, J. L., Doty, R. W., Demeter, S., and Sinnard, P. Y. (1994). Time is of essence: A conjecture that hemispheric specialization arises from interhemispheric cunduction delay. Cereb.Cortex 4: 331–343.Google Scholar
  42. Shafer, D. D. (1993). Patterns of hand preference in gorillas and children. In Ward, J. P., and Hopkins, W. D. (eds.), Primate Laterality: Current Behavioral Evidence of Primate Asymmetries, Springer, New York, pp. 267–283.Google Scholar
  43. Shafer, D. D. (1997). Hand preference behaviors shared by two groups of captive bonobos.Primates 38: 303–313.Google Scholar
  44. Steenhuis, R. E., and Bryden, M. P. (1989). Different dimensions of hand preference that relate to skilled and unskilled activities. Cortex 25: 289–304.Google Scholar
  45. Ward J. P., and Hopkins, W. D. (eds.) (1993). Primate Laterality: Current Behavioral Evidence of Primate Asymmetries, Springer, New York.Google Scholar
  46. Warren, J. M. (1980). Handedness and laterality in humans and other animals. Physiol. Psychol. 8: 351–359.Google Scholar

Copyright information

© Plenum Publishing Corporation 2002

Authors and Affiliations

  • Michael J. Wesley
    • 1
  • Samuel Fernandez-Carriba
    • 2
  • Autumn Hostetter
    • 1
  • Dawn Pilcher
    • 2
  • Sarah Poss
    • 1
  • William D. Hopkins
    • 1
  1. 1.Department of PsychologyBerry CollegeMount Berry
  2. 2.Division of Psychobiology, Yerkes Regional Primate Research CenterEmory UniversityAtlanta

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