Are Identical Twins More Similar in Their Decision Making Styles Than Their Fraternal Counterparts?

Gad Saad, Richard Sejean, Gil Greengross, Lynn Cherkas

Research output: Contribution to journalArticlepeer-review

3 Citations (SciVal)
298 Downloads (Pure)


Using a twin 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.

Original languageEnglish
Pages (from-to)638-643
Number of pages6
JournalJournal of Business Research
Early online date18 Apr 2019
Publication statusPublished - 30 Nov 2020


  • Behavioral genetics
  • General decision making scale
  • Information search
  • Maximizing-satisficing
  • Multi-attribute choice
  • Twins study


Dive into the research topics of 'Are Identical Twins More Similar in Their Decision Making Styles Than Their Fraternal Counterparts?'. Together they form a unique fingerprint.

Cite this