iiinova — where your digital self keeps evolving

Reposted by Jeff Spielberg

Jeni Kubota @jenikubota.bsky.social · 19/11/2024

Sooooooo happy for you!!!!! 🥹 🎉🎉👏🏼

Reposted by Jeff Spielberg

simine vazire @simine.com · 11/11/2023

The quotes from Nature EiC Magdalena Skipper about whether journals should be checking for errors/data quality as part of peer review are quite surprising to me. www.wsj.com/science/whats-wrong-wit…

Screenshot of portion of article linked to in post, where Nature EiC says that checking underlying data is not the job of peer review.

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Reposted by Jeff Spielberg

Heather Urry @heatherurry.io · 08/11/2023

I love working with grad students. I love it even more when they try to take forward steps despite uncertainty/confusion. Uncertainty/confusion is not just a part of learning or a sign of one’s early career stage, it’s a part of science. It does not go away.

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Jeff Spielberg @jmsp.bsky.social · 23/10/2023

Interesting - I wonder if it will have any real impact.

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Jeff Spielberg @jmsp.bsky.social · 23/10/2023

Follow my student @ldchurch.bsky.social who just joined Bluesky - she is the best!

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Jeff Spielberg @jmsp.bsky.social · 15/10/2023

I also hate it when they redo your figures. Multiple times I’ve minimized useless black (i.e., background) space around brain images, only to have the journal add black space in, so that now it’s 70% useless space and the actual data part is relatively smaller and thus lower resolution.

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Jeff Spielberg @jmsp.bsky.social · 12/10/2023

Clinical Science @ U Delaware is hiring for an open rank tenure-track position! We’re open to research expertise in any area within clinical science (broadly defined), although we’re particularly interested in those who focus on developmental processes. Please forward to any who might be interested.

careers.udel.edu

University of Delaware - Details - Tenure-Track Faculty Position, Clinical Science Program (Psycholo...

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Jeff Spielberg @jmsp.bsky.social · 11/10/2023

Also, mean centering essentially reduces colinearity by assigning shared variance to main effects (although not perfectly).

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Jeff Spielberg @jmsp.bsky.social · 11/10/2023

Don’t you always want to assign common variance to the main effects, given that the interaction is not the product term itself, but the product with main effects partialed out (Cohen 1978, Psych Bull)? So any shared variance shouldn’t belong to the interaction.

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Jeff Spielberg @jmsp.bsky.social · 11/10/2023

Effect size of the interaction or the main effects?

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Jeff Spielberg @jmsp.bsky.social · 11/10/2023

One thing I’m curious about is what determines how much mean centering reduces the correlation b/t the product term & main effects, b/c it can vary a lot. I briefly tried figuring this out (ie avoided real work), but no luck. I’d guess it’s some aspect of the multivariate distribution b/t X & Y?

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Jeff Spielberg @jmsp.bsky.social · 11/10/2023

Absolutely - I definitely wasn’t suggesting that we should partial main effects from the product term all the time - just that it does a better job of reducing the collinearity between the interaction and the main effects.

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Reposted by Jeff Spielberg

KevinJY @kevinjy.bsky.social · 10/10/2023

Since covid rumors and disinformation are increasingly migrating to Bluesky, here's a reminder that covid does not make people immunocompromised and is nothing like HIV. It's a myth based on crank theories and quotes taken out of context, but it just won't die.

factcheck.org

Posts Exaggerate Lab Findings About COVID-19’s Impact on Immune System - FactCheck.org

Outside of long COVID or very severe cases, most research suggests COVID-19 doesn’t cause lasting damage to the immune system. A few studies have found evidence of some possible damage, but nothing ...

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Jeff Spielberg @jmsp.bsky.social · 11/10/2023

If you split by X, for example, as the main effect of X increases, the lines will shift away from each other vertically. As the main effect of Y increases, both lines will tilt by the same amount. But if the main effects of X and Y are 0, the pattern will always be an X.

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Jeff Spielberg @jmsp.bsky.social · 11/10/2023

Specifically, the interaction effect alone is always a cross-over. All other patterns result from graphing both the interaction and ‘main effects’.

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Jeff Spielberg @jmsp.bsky.social · 11/10/2023

My second thought was about your comment on ordinal vs. cross-over interactions. I realize these are common ways of describing ‘interaction effects’, but that’s confounding the actual interaction effect with the combined effects of the variables going into the interaction (i.e., X, Y, & XY).

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Jeff Spielberg @jmsp.bsky.social · 11/10/2023

Also, mean centering doesn’t remove the correlation entirely. There is a way to completely remove the correlation if you really want to: partial X & Y from XY.

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Jeff Spielberg @jmsp.bsky.social · 11/10/2023

First, I know it’s common to mean center X & Z before multiplying them, but the test of the interaction is unaffected by this, because the partialed product term is identical either way. This can be seen by creating product terms both ways and partialing the respective main effect terms from each.

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Jeff Spielberg @jmsp.bsky.social · 10/10/2023

I’ve also been confused why people are so down on interactions. Thanks for doing this! I had a couple of small thoughts after reading your post.

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Reposted by Jeff Spielberg

Rik Henson @rhens.bsky.social · 10/10/2023

There was some discussion (on t'other place) about interactions (moderations) being hard to detect, which puzzled me. So I did some Rmd simulations, which I think suggest this may be an over-generalised concern. Have a look, and please correct me where wrong. www.mrc-cbu.cam.ac.uk/personal/rik...

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Jeff Spielberg @jmsp.bsky.social · 08/10/2023

Probably lots of zeros or other repeated values - unzipped each matrix entry is represented individually in memory, but (g)zipped it finds patterns (e.g., lots of zeros in a row) and saves the pattern descriptions, which are much smaller

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Reposted by Jeff Spielberg

Dr. Stephanie @punkrockscience.bsky.social · 06/10/2023

“The initial data leak was… 1 million lines of data for Ashkenazi people.” “The information… includes full names, usernames, profile photos, sex, date of birth, genetic ancestry results, and geographical location.” Well, that’s surely not going to be a fucking problem. (sarcastically) 🧪

bleepingcomputer.com

Genetics firm 23andMe says user data stolen in credential stuffing attack

23andMe has confirmed to BleepingComputer that it is aware of user data from its platform circulating on hacker forums and attributes the leak to a credential-stuffing attack.

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Jeff Spielberg @jmsp.bsky.social · 05/10/2023

Looking for a postdoc for an NIH-funded study looking at the development of brain networks in adolescence. See the link for more info. Please pass this on if you know someone who might be interested!

sites.udel.edu

Lab Opportunities | Connectomics of Anxiety & Depression Lab

The lab is accepting graduate students for Fall 2023. We are hiring a POSTDOC position - see below for detail. Currently, we do not have openings for ...

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