Do Monozygotic Twins Have Higher Genetic Quality than Dizygotic Twins and Singletons? Hints from Attractiveness Ratings and Self-Reported Health

Kanazawa, Satoshi; Segal, Nancy L.

doi:10.1007/s11692-019-09470-0

Cited by 1 publication

(1 citation statement)

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“…The key to understanding the biological roots of consumer decision making is in recognizing the evolutionary forces that have shaped our behaviors and preferences across various domains of evolutionary import (see Saad, 2011;Saad, 2007). Many of the decisions that we make have had a profound effect on our reproductive fitness (e.g., mate choice), and as such it should not be surprising that some elements of decision making are heritable and hence possess a genetic basis (see Kanazawa & Segal, 2019 for an evolutionary analysis of twinning). A promising area for future research is to investigate the interaction between culture and biology and explore the contexts in which each factor is likely to be more dominant in shaping consumer choice.…”

Section: Discussionmentioning

confidence: 99%

Are identical twins more similar in their decision making styles than their fraternal counterparts?

Saad

Sejean

Greengross

et al. 2020

Journal of Business Research

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Using a twins study paradigm the genetic basis of decision making styles was explored using psychometric scales as well as actual choices. Study 1 compared monozygotic (MZ) and dizygotic (DZ) twins along the General Decision Making Scale (GDMS) and the Maximizing-Satisficing Inventory (MAX). MZ twins exhibited greater similarity than their DZ counterparts in terms of their overall GDMS scores, three of the GDMS subscales, and the MAX inventory. Study 2 measured key information processing metrics of actual choices that individuals made via a computerized informational display board. MZ twins are more similar to one another than DZ twins when it comes to the extent of information search prior to making a choice. There were no differences between the two groups of twins in terms of the selectivity and pattern of searches. The results of the two studies suggest that individuals' decision making styles are in part shaped by their genes.

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Section: Discussionmentioning

confidence: 99%