The 1990 “Minnesota Study of Twins Reared-Apart” IQ Study

Ripe for Retraction?

Authors

  • Dr. Jay Joseph

Abstract

Reared-apart (separated) identical twins have great appeal. Though exceedingly rare, many people see them as providing the ultimate Rosetta Stone-type method of teasing apart the potential roles of nature and nurture as causes of human behavioral variation. They share a genetic identity while—in theory—growing up and living under entirely different environmental conditions. The two main ways they have come to our attention have been anecdotal stories of individual twin pairs said to share “spooky” and “eerie” behavioral similarities, and a small handful of scientific studies based on a sample of twins. Here, I focus on the latter.

Downloads

Published

2023-10-24

How to Cite

Joseph, J. . (2023). The 1990 “Minnesota Study of Twins Reared-Apart” IQ Study: Ripe for Retraction?. Free Associations, (89). Retrieved from https://freeassociations.org.uk/FA_New/OJS/index.php/fa/article/view/458

Issue

No. 89 (2023)

Section

Articles

License

Authors who publish with this journal agree to the following terms: Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal. Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal. Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work (See The Effect of Open Access).