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David Baranger

@davidbaranger.bsky.social

1.1K followers 1.1K following 480 posts

Assistant Professor at the Medical College of Wisconsin. 🧀 Substance use, neuroscience, genetics, & development. 🧠🧬🍺 Rock climber & dad. He/him. 🧗 Opinions my own. bearlab.science 🐻

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David Baranger @davidbaranger.bsky.social · 13d

Excited to share that I am officially recruiting a postdoc to study the neurobiology of addiction! Looking for someone who would be excited to lead current projects in the lab and develop new directions in related areas.
More info: bearlab.science/opportunities/

Opportunities

Interested in the neuroscience of addiction? We are recruiting at all levels!! Reach out to Dr. Baranger – [email protected] Postdoctoral fellows/Senior Scientists: Please send an email conta…

bearlab.science

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David Baranger @davidbaranger.bsky.social · 6d

A new favorite citation appeared!

Marc L Seal @parkvillegeek.bsky.social · 6d

👀

From Maps to Models: A Survey on the Reliability of Small Studies of Task-Based fMRI | bioRxiv www.biorxiv.org/content/10.1...

David Baranger @davidbaranger.bsky.social · 8d

TIL in Windows you can use PowerShell to search not only file names but also text file contents - including .R and .Rhistory files. In a moment of pure insanity, 1.5 years ago I did not save the code for a figure, but it was recorded in an old .Rhistory file!

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David Baranger @davidbaranger.bsky.social · 13d

Lol thanks!!!

David Baranger @davidbaranger.bsky.social · 13d

Also, I will be at #SRP this week if anyone wants to chat!

David Baranger @davidbaranger.bsky.social · 13d

Current projects in the lab include longitudinal neuroimaging of substance use at different time-scales, family-based studies of casual and genetic effects, and the development of new ML models for task fMRI. This is a funded position with up to 3 years of funding available.

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David Baranger @davidbaranger.bsky.social · 13d

Opportunities

Interested in the neuroscience of addiction? We are recruiting at all levels!! Reach out to Dr. Baranger – [email protected] Postdoctoral fellows/Senior Scientists: Please send an email conta…

bearlab.science

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Reposted by David Baranger

Jamie Hanson @jamielarsh.bsky.social · 16d

🧠📊 New research examines potential bias in brain age algorithms across racial groups

📈 Study of 6 popular algorithms found lower accuracy for African American participants (r=0.51-0.85) compared to White/Hispanic participants (r=0.57-0.89)/1

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David Baranger @davidbaranger.bsky.social · 21d

𝐓𝐡𝐞 𝐥𝐢𝐟𝐞𝐬𝐩𝐚𝐧 𝐭𝐫𝐚𝐣𝐞𝐜𝐭𝐨𝐫𝐢𝐞𝐬 𝐨𝐟 𝐛𝐫𝐚𝐢𝐧 𝐚𝐜𝐭𝐢𝐯𝐢𝐭𝐢𝐞𝐬 𝐫𝐞𝐥𝐚𝐭𝐞𝐝 𝐭𝐨 𝐜𝐨𝐧𝐟𝐥𝐢𝐜𝐭-𝐝𝐫𝐢𝐯𝐞𝐧 𝐜𝐨𝐠𝐧𝐢𝐭𝐢𝐯𝐞 𝐜𝐨𝐧𝐭𝐫𝐨𝐥 | "The predominant lifespan trajectory is inverted U-shaped, rising from childhood to peak in young adulthood before declining in later adulthood" www.sciencedirect.com/science/arti...

The lifespan trajectories of brain activities related to conflict-driven cognitive control

Cognitive control is fundamental to human goal-directed behavior. Understanding its trajectory across the lifespan is crucial for optimizing cognitive…

www.sciencedirect.com

David Baranger @davidbaranger.bsky.social · 21d

𝐀𝐝𝐝𝐢𝐭𝐢𝐯𝐞 𝐚𝐧𝐝 𝐈𝐧𝐭𝐞𝐫𝐚𝐜𝐭𝐢𝐯𝐞 𝐑𝐞𝐥𝐚𝐭𝐢𝐨𝐧𝐬𝐨𝐟 𝐏𝐞𝐫𝐬𝐨𝐧𝐚𝐥𝐢𝐭𝐲 𝐚𝐧𝐝 𝐂𝐨𝐠𝐧𝐢𝐭𝐢𝐨𝐧 𝐖𝐢𝐭𝐡𝐄𝐱𝐭𝐞𝐫𝐧𝐚𝐥𝐢𝐳𝐢𝐧𝐠 𝐁𝐞𝐡𝐚𝐯𝐢𝐨𝐫𝐬 | "Although interaction effects were detected, they were small and practically negligible in their explanation of variance in externalizing behaviors" journals.sagepub.com/doi/10.1177/...

Additive and Interactive Relations of Personality and Cognition With Externalizing Behaviors - Nathaniel L. Phillips, Nathan T. Carter, Kevin M. King, Courtland S. Hyatt, Max M. Owens, Donald R. Lynam...

Personality and cognition offer robust frameworks to understand the individual differences associated with externalizing behaviors. However, these literatures h...

journals.sagepub.com

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David Baranger @davidbaranger.bsky.social · 23d

Thanks! I was able to create an educator account on datacamp, which lets me give trainees access for free if then enroll in my 'class'. So far it looks like a useful supplement, particularly for programming concepts that might be new

David Baranger @davidbaranger.bsky.social · 26d

Wooo NOA day! Phew.

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David Baranger @davidbaranger.bsky.social · 28d

If you're looking at pre-6.0 ABCD results with subcortical rs-fMRI correlations, the labels are all wrong! We reported a result as Auditory - L Putamen, but it it was actually Default Mode - L Cerebellum. docs.abcdstudy.org/latest/docum...

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David Baranger @davidbaranger.bsky.social · Aug 29

For sure. I guess my point is that a generative epistatic model with uncentered effects is equivalent to a centered model with large additive effects with the means added in after the data are generated. So the increasing additive effects you're seeing at higher MAF are expected.

David Baranger @davidbaranger.bsky.social · Aug 28

Thanks so much!! Instead of saying that this is skew (MAF), I would say that this comes from not mean-centering X1/X2 before making the interaction term. I do find it surprising that the extent of the multi-collinearity (from not mean-centering) is larger when X1 & X2 are normal (MAF=0.5).

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David Baranger @davidbaranger.bsky.social · Aug 28

I'm finding it hard to wrap my head around this. I would have expected the opposite! Would you mind sharing your simulation code?

David Baranger @davidbaranger.bsky.social · Aug 12

I posed the original as well! My re-statement is intended to explain why I'm interested in the question.

David Baranger @davidbaranger.bsky.social · Aug 11

Ok thank you!!

David Baranger @davidbaranger.bsky.social · Aug 11

I'm thinking of an additive effect as one in which the two variables are both significant predictors. It's not additive if one variable is unrelated, or doesn't explain unique variance. Model comparisons are also sensitive to when only one of the two is significant.

David Baranger @davidbaranger.bsky.social · Aug 10

If interactions are incorrectly used when the actual hypothesis is an additive effect, then what's the appropriate test? stats.stackexchange.com/questions/66... #stats #rstats

Test if two coefficients in a linear model are both significant

Is there a single test one can perform that would be significant if two coefficients in a linear model are both different from 0, but would not be significant if only one of them differs from 0? Ye...

stats.stackexchange.com

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David Baranger @davidbaranger.bsky.social · Jul 16

But I don't know of any lit that explicitly unpacks this. Probably because they're not treated as such - main effects are mostly never included, so effects can actually be misattributed to the ratio term. See BMI - pmc.ncbi.nlm.nih.gov/articles/PMC...

Pitfalls in performing genome-wide association studies on ratio traits

Genome-wide association studies (GWASs) are often performed on ratios composed of a numerator trait divided by a denominator trait. Examples include body mass index (BMI) and the waist-to-hip ratio, a...

pmc.ncbi.nlm.nih.gov

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David Baranger @davidbaranger.bsky.social · Jul 16

IMO, ratios are often incorrectly used as a way to adjust for a baseline value. I would also be wary of using with scales that approach 0 (funky distribution). If that isn't the case, then I agree with Tom that the interpretation could be like an interaction term where you didn't mean-center first.

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David Baranger @davidbaranger.bsky.social · Jul 14

Folks who had RAs learn R while in your lab - what resources were helpful? Are things like datacamp worth it?

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Reposted by David Baranger

Neuropsychopharmacology @npp-journal.bsky.social · May 29

Don't miss this interview with ✨new✨ @npp-journal.bsky.social Associate Editor Dr. Arpana Agrawal & our Special Projects Manager @brikchen.bsky.social

Hear Dr. Agrawal's thoughts on the scope of the journal, NPP articles, and the role of peer reviewers (aka YOU!)

www.youtube.com/watch?v=_HqN...

npp's "Meet the Editor" with Dr. Arpana Agrawal

YouTube video by NPP Journal

www.youtube.com

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David Baranger @davidbaranger.bsky.social · May 25

Beautiful! We're hoping to get over there for July 4th

David Baranger @davidbaranger.bsky.social · May 25

Thanks!!