1259: Thomas J. Bouchard Jr.
Author(s): Scott Douglas Jacobsen
Publication (Outlet/Website): Medium (Personal)
Publication Date (yyyy/mm/dd): 2025/05/31
1981
“In some domains it looks as though our identical twins reared apart are… just as similar as identical twins reared together. Now that’s an amazing finding and I can assure you none of us would have expected that degree of similarity.”
1990
“Monozygotic twins reared apart are about as similar as monozygotic twins reared together.”
1990
“The effect of being reared in the same home is negligible for many psychological traits.”
1997
“Individuals unquestionably influence the nature of their experiences, e.g. high-sensation seekers surround themselves with like-minded peers and seek out quite different experiences than those provided by typical family, school, and work environments.”
1998
“There probably are genetic influences on almost all facets of human behavior, but the emphasis on the idiosyncratic characteristics is misleading. On average, identical twins raised separately are about 50 percent similar — and that defeats the widespread belief that identical twins are carbon copies. Obviously, they are not. Each is a unique individual in his or her own right.”
2001
“There is abundant evidence, some of it reviewed in this paper, that personality traits are substantially influenced by the genes.”
2004
“Genetic influence on human psychological traits is ubiquitous, and psychological researchers must incorporate this fact into their research programs else their theories will be ‘scientifically unimpressive and technologically worthless.’”
2013
“The contribution of the parents, whether natural or adoptive, is in potentiating the child’s inherent capabilities, in creating an atmosphere of enthusiasm for learning, and in adapting their expectations to the child’s capability. The wide diversity within families emphasizes the importance of giving each child full opportunity for development, and indeed of making sure that the opportunity is taken.”
Last updated May 3, 2025. These terms govern all In Sight Publishing content—past, present, and future—and supersede any prior notices. In Sight Publishing by Scott Douglas Jacobsen is licensed under a Creative Commons BY‑NC‑ND 4.0; © In Sight Publishing by Scott Douglas Jacobsen 2012–Present. All trademarks, performances, databases & branding are owned by their rights holders; no use without permission. Unauthorized copying, modification, framing or public communication is prohibited. External links are not endorsed. Cookies & tracking require consent, and data processing complies with PIPEDA & GDPR; no data from children < 13 (COPPA). Content meets WCAG 2.1 AA under the Accessible Canada Act & is preserved in open archival formats with backups. Excerpts & links require full credit & hyperlink; limited quoting under fair-dealing & fair-use. All content is informational; no liability for errors or omissions: Feedback welcome, and verified errors corrected promptly. For permissions or DMCA notices, email: scott.jacobsen2025@gmail.com. Site use is governed by BC laws; content is “as‑is,” liability limited, users indemnify us; moral, performers’ & database sui generis rights reserved.
In-Sight Publishing 