Eric Turkheimer
ent3c.bsky.social
Eric Turkheimer
@ent3c.bsky.social
Behavior genetics, clinical psychology, Mets. Occasional politics.

Substack (free): https://ericturkheimer.substack.com/

Book Is Out! Understanding the Nature-Nurture Debate
https://shorturl.at/Ce2hf

Electronic Version: https://shorturl.at/Fq2jv
Reposted by Eric Turkheimer
For what it’s worth, @ent3c.bsky.social and I worked on related problems some years ago. We argued that there is a theoretical reason for measuring overall valence separately pubmed.ncbi.nlm.nih.gov/23773039/
Approach temperament, anger, and evaluation: resolving a paradox - PubMed
Factor analytic investigations into the structure of naturalistically observed self-reported mood suggest that anger loads together with avoidance temperament markers, such as fear and anxiety. However, when anger is examined following experimental manipulation, it appears to relate more to approach …
pubmed.ncbi.nlm.nih.gov
January 22, 2026 at 8:04 PM
You can imagine an AI agent that could learn to tell time by watching the position of the gears. re: HD. It's the same thing. We think of the clinical signs of the disease as the consequent, and they gene as the cause, but why? They are two parts, at different scales, of the same entity. /end
January 16, 2026 at 10:29 PM
Thanks for the comment. re: clocks. If you turn the hands on a clock, the gears move inside. They are linked across scales by a mechanism (see Craver and Bechtel). One doesn't cause the other: they are two parts of the same thing. The correlation of the hands to time of day is a human convenience /1
January 16, 2026 at 10:29 PM
Yes, it worked out for me, and afaik the investigators whose work I was criticizing are doing fine. Without opening the can of worms all the way, it wasn't just the premises....
January 7, 2026 at 6:42 PM
Agreed, though I think it is important to acknowledge how difficult it is. It isn't something you can do without naming names. People are hurt and friendships ended. Though I stand by every word of it, I am not over my ambivalence about publishing this paper.
TurkheimerRodock.pdf
drive.google.com
January 7, 2026 at 6:10 PM
Rode in an elevator in NYC with Spiro Agnew. When he got off, someone said, "Everyone check your wallet."
December 29, 2025 at 8:59 PM
The Pettersson paper is much more circumspect, though they too reach fairly strong conclusions about population associations holding up within families. I am generally skeptical we can learn much about these issues when we start with such tiny population effect sizes. Time will tell.
December 9, 2025 at 9:45 PM
I'm embarrassed to report that I was incorrect when I stated that this paper was first on the scene of within-family psychopathology. In fact this paper by my former student @erikpett123.bsky.social did it three years ago, finding much the same thing.
Associations between psychiatric polygenic risk scores and general and specific psychopathology symptoms in childhood and adolescence between and within dizygotic twin pairs - PubMed
This implies that PRS-psychiatric symptom associations did not appear attributable to indirect pathways such as population stratification, assortative mating, or mediation via parental environments. Rather, genetics appeared to directly influence symptomatology.
pubmed.ncbi.nlm.nih.gov
December 9, 2025 at 9:45 PM
Here is a meme from @hfsunde.bsky.social while I think about getting back to work... /end.
December 5, 2025 at 4:00 PM
Everyone from the guy at the registration desk to the nurses to the residents to the attending surgeon were kind and respectful. Now on to the super-competent physical therapists. I think a lot about 70 year olds not very long ago who were consigned to living out their lives in pain. Grateful. /3
December 5, 2025 at 4:00 PM
I am privileged to live next to a major university medical center with reasonably good insurance, for the US. Under those conditions, even though our overall health system is a political and economic mess, once you make it to the clinic (I waited in pain for three months) the people are so nice. /2
December 5, 2025 at 4:00 PM
I haven't seen it suggested explicitly that the ongoing vibe-cession is a consequence of inequality. No matter how well one is doing in real terms, it is hard to enjoy while watching the oligarchs party at Mar a Lago.
November 25, 2025 at 1:29 PM
I would love for a reporter to ask him, "Can you explain what a standard error is?"
November 24, 2025 at 3:46 PM