Nature vs. Nurture

It’s a debate that’s been around since Sir Francis Galton, a relative of Charles Darwin, coined the term “nature versus nurture.” Does one factor matter more than another? In my interview with IQ scholar Russell Warne, he couldn’t say precisely how much each factor contributes. 

Nevertheless, a couple of other statements from his book give guidance. First, as we age, the degree to which our environment (nurture) influences our development and behavior recedes in favor of what we inherited though our genes (nature). Second, with adults in positive environments in industrialized countries (typically the West), the heritability of intelligence is about 80%. In other words, ultimately, nature wins for many of us in America.

It’s the holiday season at the end of a very bleak year. The chances are higher than usual that you haven’t been gathering with your parents this gift-giving season. But if you are, this might prove an opportunity to reflect on what you inherited from them: one’s IQ level to a fair degree, no doubt, but personality traits and behavior and habits as well. Here’s to wishing everyone well, and a better 2021!

An Accessible Guide to Being Smart about IQ

Released today: episode #34 of “Dan Hill’s EQ Spotlight,” featuring Russell T. Warne, the author of In the Know: Debunking 35 Myths about Human IntelligenceListen to the clip below and click on the image to get to the new episode.

Warne is Associate Professor of Psychology at Utah Valley University. He earned his PhD in education psychology from Texas A&M in 2011. Dr. Warne has published two books and nearly 60 scholarly articles. The publisher of In the Know is Cambridge University Press. This episode covers the specific ways in which IQ can be bolstered (mostly physical factors) versus hyped interventions. The episode also touches on how “intellectual meritocracy” is unfortunately contributing to the country’s polarization.

Dan Hill, PhD, is the president of Sensory Logic, Inc.