Hans Fredrik Sunde
@hfsunde.bsky.social
560 followers 180 following 120 posts
Researcher at the Centre for Fertility and Health (NIPH) in Oslo. Interested in assortative mating, behavioral genetics, and bias in research. www.hansfredriksunde.com
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hfsunde.bsky.social
Last week, our new paper on indirect assortative mating was published.🍾 Let’s take a closer look at what this means, why it matters, and what we found (🧵/32):

www.nature.com/articles/s41...
Reposted by Hans Fredrik Sunde
chelseaparlett.bsky.social
It’s not the method that makes you causal it’s the assumptions
Reposted by Hans Fredrik Sunde
ruben.the100.ci
Our fragmentation paper is now finally out! I put some of the dumb quips that didn't make the cut in the alt texts.
journals.sagepub.com/doi/10.1177/...
A fragmented field. If we conceive of the constructs and concepts studied in behavioral science as a map, we would find that it is highly fragmented and directions are hard to come by. Scientists can hardly stand on each others' shoulders if they cannot manage to meet on common ground. Fragmentation has worsened, not decreased, as the field has grown. Partly, this happens because we have too many reverse Columbuses, who, in search of prestige, set out to find a new continent, but just end up renaming India. But partly, we face a real, solvable search problem when trying to connect our fuzzy constructs and flexible measures. Most measures are used only once. To be clear, we do not want to prevent or reduce refinements of existing constructs and measures. Revisions, translations, and other refinements can contribute to a more coherent, organized literature and improve measurement. We are most concerned with the measures conceived with limited planning and released into the literature without much commitment or much of a life expectancy. In ontologies, these are sometimes referred to as “orphan nodes.”
hfsunde.bsky.social
Could be constant (or decreasing) assortment, but that the assorted traits have become more heritable over time (leading to greater genotypic correlation between partners)
Reposted by Hans Fredrik Sunde
rjhfmstr.bsky.social
🚨 New preprint out!
We reconstructed parental haplotypes in >440k individuals (UK & Estonian biobanks) to estimate assortative mating directly in the parental generation.
This reveals intensified assortment in recent generations.
www.biorxiv.org/content/10.1...
Reposted by Hans Fredrik Sunde
dr-appie.bsky.social
The largest study on late life virginity, based on >400k individuals, out now in @pnas.org

Open access link: pnas.org/doi/10.1073/...

Shoutout to shared first author @laurawesseldijk.bsky.social ❤️

Thread below 👇🏽
hfsunde.bsky.social
I tried making a figure explaining how the sum of variances law can be understood as the diagonal of a bivariate normal, and how a correlation between the two antecedent variables — such as under assortative mating — will result in greater variance and more cases above a threshold.
Reposted by Hans Fredrik Sunde
hfsunde.bsky.social
First, it is important to note that “assortative mating” is not synonymous with “partner similarity”. Instead, assortment is only one of several processes that can lead to partner similarity, the others being convergence, stratification, and inbreeding.
hfsunde.bsky.social
Took me a second before I remembered my high school German, haha
hfsunde.bsky.social
In Germany, there are two kinds of children. If your child is of the second kind (less of a temperament I guess), afterschool care is cheaper.
Reposted by Hans Fredrik Sunde
thomaskleppesto.bsky.social
We have a new paper out, led by the great @hfsunde.bsky.social! We find that the correlation between parental income and offspring mental disorders may be partly causal in adolescence (phenotypic transmission), but that it is largely explained by passive genetic transmission in adulthood.
hfsunde.bsky.social
Our new paper is out today! 🎉 In it, we use administrative register data to document how psychiatric disorders are strongly linked to parental income, from childhood far into adulthood. Furthermore, we attempt to separate causation and selection using kinship-based models.
doi.org/10.1111/jcpp...
Reposted by Hans Fredrik Sunde
hfsunde.bsky.social
Accompanying the paper is an interactive web page with figures and tables showing the prevalence of psychological codes in the ICPC-2 by age, sex, and parental income quartile. Check it out here:
hfsu.shinyapps.io/prevalence_b...
hfsunde.bsky.social
Now that this is published, all of my papers in my doctoral dissertation are now officially done. 🍾Thanks to everyone who helped along the >4-year journey from this paper's conception to publication!
@torvik.bsky.social @thomaskleppesto.bsky.social @magnusnordmo.bsky.social @acamh.bsky.social
hfsunde.bsky.social
Here is a free link to the paper if you don't have access:: onlinelibrary.wiley.com/share/author...

I also wrote a more detailed thread when I posted the preprint last year. Check it out here if you are interested: bsky.app/profile/hfsu...
hfsunde.bsky.social
We have a new preprint!📰Here, we describe the association between parental income and psychiatric disorders from childhood and into adulthood, and use children of twins and siblings to differentiate social selection from social causation (1/n)🧵 Link: doi.org/10.1101/2024...
hfsunde.bsky.social
Accompanying the paper is an interactive web page with figures and tables showing the prevalence of psychological codes in the ICPC-2 by age, sex, and parental income quartile. Check it out here:
hfsu.shinyapps.io/prevalence_b...
hfsunde.bsky.social
Our new paper is out today! 🎉 In it, we use administrative register data to document how psychiatric disorders are strongly linked to parental income, from childhood far into adulthood. Furthermore, we attempt to separate causation and selection using kinship-based models.
doi.org/10.1111/jcpp...
hfsunde.bsky.social
Congratulations on a nice first paper, Deniz!
Reposted by Hans Fredrik Sunde
denizfraemke.bsky.social
🚨📜 Debut publication alert!

Do genetics influence education differently across state borders? 🧬📚 We tested differences in genetic associations with education in East and West 🇩🇪 around reunification!

Out now in Psychological Science 👉 doi.org/10.1177/0956...

#Sociogenomics #MPRGBiosocial #MPIB

A🧵
Reposted by Hans Fredrik Sunde
evoroseman.bsky.social
A must-read piece by @sashagusevposts.bsky.social

I'll be That Guy™ and point out that this is why highly distributed pedigrees are used in evolution and animal breeding in nonexperimental settings. Sibs alone (esp. twins) give bad estimates. Good to see human gen getting on board.
sashagusevposts.bsky.social
I wrote a little bit about a cool recent paper looking at heritability estimates from very large registry data, and how we still really don't understand why outcomes track in families. A short 🧵:
We still do not understand family resemblance
...
theinfinitesimal.substack.com
Reposted by Hans Fredrik Sunde
tabeasch.bsky.social
🚨New preprint is out!

How do genetic effects on complex traits change with age? In this work, we compare different approaches to obtain age-varying genetic effects, and show how design and modeling choices can impact the conclusions we draw.
shorturl.at/17snd
A thread 🧵👇
Design and model choices shape inference of age-varying genetic effects on complex traits
Understanding how genetic influences on complex traits change with age is a fundamental question in genetic epidemiology. Both cross-sectional (between-subject) and longitudinal (within-subject) appro...
shorturl.at
hfsunde.bsky.social
Sasha writes about our new study (led by bluesky-less Nikolai Eftedal) where we show how simple genetic models don't adequately fit correlations between multiple types of relatives. The mismatch between observed and expected correlations are interesting, which are explained well in his blog post:
sashagusevposts.bsky.social
I wrote a little bit about a cool recent paper looking at heritability estimates from very large registry data, and how we still really don't understand why outcomes track in families. A short 🧵:
We still do not understand family resemblance
...
theinfinitesimal.substack.com
Reposted by Hans Fredrik Sunde
sashagusevposts.bsky.social
I wrote a little bit about a cool recent paper looking at heritability estimates from very large registry data, and how we still really don't understand why outcomes track in families. A short 🧵:
We still do not understand family resemblance
...
theinfinitesimal.substack.com
Reposted by Hans Fredrik Sunde
selimsametoglu.bsky.social
We have a new preprint: this work is especially dear to my heart, as it results from the data collection pipeline we established at the Netherlands Twin Register, which enabled us to collect Facebook posts and likes (paid for with plenty of blood, sweat, and tears...)
osf.io/preprints/ps...
OSF
osf.io
hfsunde.bsky.social
Nice confirmation of a commonly believed theory of why people in the Nordics generally speak English so well compared to central and southern Europe.
woessmann.bsky.social
❓Why do the Nordics & Dutch speak English so much better than the Germans, Italians & French?

➡️ New Working Paper:

Out-of-School Learning: Subtitling vs. Dubbing and the Acquisition of Foreign-Language Skills
w/ F. Baumeister & E. Hanushek

www.nber.org/papers/w33984

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