Samantha Jade Withnell, MSc

@sjwithnell.bsky.social

Clinical Psych PhD at Western University, Canada. I study biopsychosocial weight factors related to #eatingdisorders.

⏰ 🗒️ If you are applying to internship (or considering applying in the coming years), we highly recommend this FREE training series! We have fantastic speakers ready to help and we can't wait to see y'all there. Dates (all 12-1PM EST) - 8/24, 9/25, & 10/9 See below ⬇️!

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It is hardly news that the noisy correlation-based data on ultra-processed foods is very low-quality, but it turns out that the UPF randomized controlled trials probably don't offer strong evidence of the harms of "ultra-processing," either. Gift link: www.vox.com/future-perfe...

The evidence against “ultra-processed” foods is weaker than you think

New analysis suggests other factors may explain the harms blamed on “ultra-processing”

vox.com

We found that the prevalence of lifetime use was 2.5x higher among people with eating disorders compared to the general adult population. About 1 in 10 people with an eating disorder reported misuse of a GLP-1 drug (e.g., tampering with syringes, accelerating doses, sharing with others). #EDAW

THANK YOU for this paper! I've been losing my mind wondering why nobody is discussing how the black box of AI models might be a threat to years of open science efforts

Olivia Guest · Ολίβια Γκεστ@olivia.science · 10mo ago

New preprint 🌟 Psychology is core to cognitive science, and so it is vital we preserve it from harmful frames. @irisvanrooij.bsky.social & I use our psych and computer science expertise to analyse and craft: Critical Artificial Intelligence Literacy for Psychologists. doi.org/10.31234/osf... 🧵 1/

Cover page of Guest, O., & van Rooij, I. (2025, October 4). Critical Artificial Intelligence Literacy for Psychologists. https://doi.org/10.31234/osf.io/dkrgj_v1

Hi folks, we're still recruiting participants for this study! Please share this post WIDELY with anyone you know who may be eligible to participate! If you'd like to distribute off Bluesky, feel free to DM me and I can get you a blurb and flyer for email or other distribution!

Lisa Velkoff, Ph.D. (she/her)@lisavelkoff.bsky.social · last yr.

I'm new here! And I'm going to kick it off with recruitment for a research study: If you are a clinician with experience treating eating disorders, please participate in this research study!

📣Please share this opportunity to participate in my PhD research!📣 Adults across the US & Canada experiencing eating/body image problems are invited to participate in a zoom session where you'll complete an interview and a survey. For more info, check out the QR code or contact the lab!

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It's becoming clear that, if I want to finish my dissertation, I can no longer avoid learning how to run for/while loops in R. If anyone has any resources on this topic, please let me know! I briefly learned python loops in an undergrad programming class but am extremely rusty!

🚨New paper alert! In my first first-author paper for my #PhD, we explored free-text responses from 1,600+ people with #eatingdisorders to better understand the diverse behaviours used to lose weight, many of which fall outside diagnostic criteria Here's what we found👇

A screenshot from the International Journal of Eating Disorders of an original article called, "Beyond the Diagnostic Checklist: A Large-Scale Analysis of Under-Recognized Weight Loss Behaviors in Individuals With Eating Disorders"

You guys don’t need to try to convince me that any form of AI has merit. It doesn’t. It is boring and half-assed. I am fine getting by with human brain power. If the world nears its end and AI has one hater left, good news! I am still alive.

1/x My NIH grant that would collect data to help *prevent suicidal thoughts and behaviors* among LGBTQ+ people was terminated today, along with many other LGBTQ+ focused grants. These terminations make no sense scientifically. Here's why:

I've been hesitating to share good personal news with everything going on in the world and my own difficulty (re)navigating the impact of serious family illnesses on my studies. But I do have good news and I need to shout about it somewhere! So here we go: