Hostname: page-component-77c89778f8-5wvtr Total loading time: 0 Render date: 2024-07-24T00:15:45.989Z Has data issue: false hasContentIssue false

Evolutionary psychology's notion of differential grandparental investment and the Dodo Bird Phenomenon: Not everyone can be right

Published online by Cambridge University Press:  09 April 2010

Martin Voracek
Affiliation:
Department of Basic Psychological Research, School of Psychology, University of Vienna, A-1010 Vienna, Austria. martin.voracek@univie.ac.athttp://homepage.univie.ac.at/martin.voracek/
Ulrich S. Tran
Affiliation:
Department of Clinical, Biological, and Differential Psychology, School of Psychology, University of Vienna, A-1010 Vienna, Austria. ulrich.tran@univie.ac.at
Maryanne L. Fisher
Affiliation:
Department of Psychology, St. Mary's University, Halifax, Nova Scotia, B3H 3C3, Canada. mlfisher@smu.ca

Abstract

Integration of different lines of research concerning grandparental investment appears to be both promising and necessary. However, it must stop short when confronted with incommensurate arguments and hypotheses, either within or between disciplines. Further, some hypotheses have less plausibility and veridicality than others. This point is illustrated with results that conflict previous conclusions from evolutionary psychology about differential grandparental investment.

Type
Open Peer Commentary
Copyright
Copyright © Cambridge University Press 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Anderson, K. G. (2006) How well does paternity confidence match actual paternity? Evidence from worldwide nonpaternity rates. Current Anthropology 47:513–20.CrossRefGoogle Scholar
Bellis, M. A., Hughes, K. E., Hughes, S. K. & Ashton, J. R. (2005) Measuring paternal discrepancy and its public health consequences. Journal of Epidemiology and Community Health 59:749–54.CrossRefGoogle ScholarPubMed
Beutler, L. E. (1991) Have all won and must all have prizes? Revisiting Luborsky et al.'s verdict. Journal of Consulting and Clinical Psychology 59:226–32.CrossRefGoogle ScholarPubMed
Euler, H. A. & Weitzel, B. (1996) Discriminative grandparental solicitude as reproductive strategy. Human Nature 7:3959.CrossRefGoogle ScholarPubMed
Gaulin, S. J. C., McBurney, D. H. & Brakeman-Wartell, S. L. (1997) Matrilateral biases in the investment of aunts and uncles: A consequence and measure of paternity uncertainty. Human Nature 8:139–51.CrossRefGoogle ScholarPubMed
Luborsky, L., Singer, B. & Luborsky, L. (1975) Comparative studies of psychotherapies: Is it true that “Everyone has won and all must have prizes”? Archives of General Psychiatry 32:9951008.CrossRefGoogle Scholar
Pashos, A. (2000) Does parental uncertainty explain discriminative grandparental solicitude? A cross-cultural study in Greece and Germany. Evolution and Human Behavior 21:97109.CrossRefGoogle Scholar
Russell, R. J. H. & Wells, P. A. (1987) Estimating paternity confidence. Ethology and Sociobiology 8:215–20.CrossRefGoogle Scholar
Shadish, W. R. & Sweeney, R. B. (1991) Mediators and moderators in meta-analysis: There's a reason why we don't let dodo birds tell us which psychotherapies should have prizes. Journal of Consulting and Clinical Psychology 59:883–93.CrossRefGoogle Scholar
Steinbach, I. & Henke, W. (1998) Grosselterninvestment – eine empirische interkulturelle Vergleichsstudie [Grandparental investment – An empirical cross-cultural comparative study]. Anthropologie 36:293301.Google Scholar
Tran, U. S., Fisher, M. L. & Voracek, M. (2009) Spousal age differences and sex differences in life expectancy are confounders of matrilateral biases in kin investment. Basic and Applied Social Psychology 31:295303.CrossRefGoogle Scholar
Voracek, M., Haubner, T. & Fisher, M. L. (2008) Recent decline in nonpaternity rates: A cross-temporal meta-analysis. Psychological Reports 103799–811.Google Scholar