Parental investment : how an equity motive can produce inequality

Hertwig, Ralph and Davis, Jennifer Nerissa and Sulloway, Frank J.. (2002) Parental investment : how an equity motive can produce inequality. Psychological bulletin, 128. pp. 728-745.

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Official URL: http://edoc.unibas.ch/dok/A5265666

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The equity heuristic is a decision rule specifying that parents should attempt to subdivide resources more or less equally among their children. This investment rule coincides with the prescription from optimality models in economics and biology in cases in which expected future return for each offspring is equal. In this article, the authors present a counterintuitive implication of the equity heuristic: Whereas an equity motive produces a fair distribution at any given point in time, it yields a cumulative distribution of investments that is unequal. The authors test this analytical observation against evidence reported in studies exploring parental investment and show how the equity heuristic can provide an explanation of why the literature reports a diversity of birth order effects with respect to parental resource allocation.
Faculties and Departments:07 Faculty of Psychology > Departement Psychologie > Ehemalige Einheiten Psychologie > Cognitive and Decision Sciences (Hertwig)
UniBasel Contributors:Hertwig, Ralph
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:American Psychological Association
Note:Publication type according to Uni Basel Research Database: Journal article
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Last Modified:22 Mar 2012 14:25
Deposited On:22 Mar 2012 13:44

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