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Adam Pettitt, PhD 🏳️‍🌈

@adamthislife.bsky.social
285 followers 557 following 11 posts

Clinical psychologist, digital mental health, statistics, data science, cats (in no particular order).

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Reposted by Adam Pettitt, PhD 🏳️‍🌈
Demetri @phdemetri.bsky.social · 25/12/2024
You will be visited by three ghosts
A log likelihood is shown. The quantities for the score, wald, and likelihood tests are illustrated with respect to the log likelihood.
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Tom Carpenter, PhD @tcarpenter.bsky.social · 11/12/2024
Folks who are doing survey analysis (e.g., poststratification, etc.) in R using {survey}, how are you doing fancy multilevel stuff? there is no svylmer
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Daniel P. Moriarity @dpmoriarity.bsky.social · 11/12/2024
Hot damn if this is as useful as it sounds 💘
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Anthony D. Ong @anthonyong.bsky.social · 06/12/2024
📊New study published in Emotion sheds light on affect dynamics in depression. Analysis of 842 adults over 56 days shows negative affect becomes more 'sticky' rather than unstable. This suggests emotional predictability, not instability, may be key. psycnet.apa.org/record/2025-...
psycnet.apa.org
APA PsycNet
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Michael Friendly @datavisfriendly.bsky.social · 06/12/2024
📊 #dataviz A couple of years old, but still worth reading-- The Science of Visual Data Communication: What Works A very thorough review of ideas and evidence by @SteveFranconeri, @LacePadill and others. journals.sagepub.com/doi/epub/10....
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Daniel P. Moriarity @dpmoriarity.bsky.social · 05/12/2024
Doing a deeper dive into reflective vs. formative modeling, thanks to some wonderful reviewers. #StatsSky #AcademicSky pdfs.semanticscholar.org/d156/8a44bb3...
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Julia M. Rohrer @dingdingpeng.the100.ci · 05/12/2024
New post on the 100% Christmas Interval -- after almost 8 years, it's time that we finally talk about CIs. www.the100.ci/2024/12/05/w...
the100.ci
Why you are not allowed to say that your 95% confidence interval contains the true parameter with a probability of 95%
A shibboleth is a custom, such as a choice of phrasing, that distinguishes one group of people from another. The term goes back to the Hebrew Bible, in which the inhabitants of Gilead identify members...
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Reposted by Adam Pettitt, PhD 🏳️‍🌈
Hadar Fisher @hadarfisher.bsky.social · 29/11/2024
🚨 New preprint alert! 🚨 Our latest study focuses on identifying adolescents at heightened risk of developing depression by examining how emotion regulation dynamics during this critical developmental period predict future symptoms. osf.io/preprints/ps...
osf.io
OSF
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Tom Carpenter, PhD @tcarpenter.bsky.social · 28/11/2024
What would a “validity movement” look like in your area? In mine, I’d list these top 4: - chase down the meaning of established signals with many different methods - better description - explore why diff methods converge or diverge on same questions - question narratives for current signal You?
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Michael Friendly @datavisfriendly.bsky.social · 24/11/2024
#rstats #StatSky Want to understand/explain the results of multivariate tests for linear models? The {heplots} 📦 visualizes these as ellipsoids for hypothesis end error matrices for an lm(). V 1.7.1 now on #CRAN {candisc} 📦 shows these in simpler canonical space 🔗See: friendly.github.io/heplots/
Data ellipses (both classical and robust) for Sepal.Length and Sepal.Width in the iris data, by species.
The grey ellipses show the pooled, with-group covariance matrix.HE plot for the multivariate effect of Species, Sepal.Length and Sepal.Width in the iris data, together with hypothesis tests for two contrasts (which plot as lines)All pairwise HE plots for the variables in the iris dataHE plot for iris data in canonical space. Differences among species nearly entirely confined to one dimension.
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Daniel P. Moriarity @dpmoriarity.bsky.social · 23/11/2024
On today's edition of "Sh*t I wish I knew 8 years ago" Simple "isolate" function from blml package to get within- and between-person centered versions of a list of variables. H/t to kzee.github.io/Centering_De... #Rstats #AcademicSky
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Vinni Ott @vlott.bsky.social · 23/11/2024
The Raincloud Quartet (new pre-print) All N = 111, M = 0.04, SD = 0.27. One-sided t-tests vs. 0 yield: t(110) = 1.67, p = .049. Only raincloud plots reveal the qualitative differences, preventing the drawing of inappropriate conclusions. How did we create the quartet? Where are data & code? 🧵👇
Four raincloud plots: a normal distribution, bimodal, skewed, and one riddled with outliers. Popular sample statistics are identical so that mere plotting of the identical means and confidence intervals would miss these qualitative differences.abstract of pre-print
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Carl Streed Jr. MD MPH FACP FAHA (he/him) @cjstreed.bsky.social · 23/11/2024
Despite recommendations & requirements to collect sexual orientation & gender identity #SOGI data in electronic health records #EHR there is WILD variability across health care systems and EHR platforms. This will be critical in the coming years... academic.oup.com/jamiaopen/ar...
academic.oup.com
Sex, sexual orientation, and gender identity data collection across electronic health record platforms: a national cross-sectional survey
AbstractObjectives. To assess the current state of sex, sexual orientation, and gender identity (SSOGI) data collection options in US electronic health rec
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Adam Pettitt, PhD 🏳️‍🌈 @adamthislife.bsky.social · 22/11/2024
In case no one has told you, go watch Wicked.
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Julia M. Rohrer @dingdingpeng.the100.ci · 20/11/2024
When a study talks about various things that could bias estimates but never explicitly addresses the analysis goal in the first place
Goose chase meme.
Top Panel: Suspicious goose asks "biased relative to what?"
Bottom Panel: Goose is chasing a man, yelling "Biased relative to what?"
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Hudson Golino @hudsongolino.bsky.social · 18/11/2024
Do you like network psychometrics? Are you interested in Exploratory Graph Analysis and related techniques? Check out our new website: r-ega.net
r-ega.net
Exploratory Graph Analysis – a Framework for Estimating the Number of Dimensions in Multivariate Data using Network Psychometrics
Implements the Exploratory Graph Analysis (EGA) framework for dimensionality and psychometric assessment. EGA estimates the number of dimensions in psychological data using network estimation methods ...
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Tim Morris @timpmorris.bsky.social · 18/11/2024
Great to see this paper out! 'Simulation studies for methodological research in psychology: A standardized template for planning, preregistration, and reporting.' Journal: doi.org/10.1037/met0... Accepted: osf.io/preprints/ps...
psycnet.apa.org
APA PsycNet
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mark brandt @mjbsp.bsky.social · 18/11/2024
Using a mix of observational and experimental methods, organization-level inclusion signals had positive effects for both LGBT and non-LGBT employees osf.io/preprints/ps... #socialpsyc #psychology #PsychSciSky #prejudice
Line plot showing Main effect of Organization-level Inclusion Signaling on LGBT and non-LGBT Employees in Study 1More inclusive companies are seen as having a better culture for both LGB and non-LGB peopleBar graph with experimental results showing that inclusive signals benefit both non-LGBT and LGBT participants
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Michael Friendly @datavisfriendly.bsky.social · 19/11/2024
You need a better key to translate probability to words. Then, the logit = log (p/1-p) is just another y axis on this chart
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Ciro Cattuto @ccattuto.bsky.social · 18/11/2024
New paper out in Nature Communications: www.nature.com/articles/s41... With Lorenzo Dall'Amico and @alainbarrat.bsky.social, we define a distance between temporal networks and explore its sensitivity to complex features in empirical temporal network data. @isifoundation.bsky.social
nature.com
An embedding-based distance for temporal graphs - Nature Communications
Temporal graphs can be applied to represent time-evolving complex natural systems, describing the evolution of the interactions between system elements, however quantifying the similarity between temp...
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Aleksa Kaurin @aleksakaurin.bsky.social · 18/11/2024
🚨New Preprint on Affective Stress Responses in Daily life (N=248) - w/ @vizecolin.bsky.social and @aidangcw.bsky.social! We used high-density sampling after stressful events to closely examine the dynamic affective response following daily hassles by estimating latent microtrajectories. 1/3
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Georgia Turner @georgiaturner.bsky.social · 13/11/2024
🚨New preprint 🚨 **A computational model of reward learning and habits on social media** 🧵 We develop a computational reward learning model of real-world social media data, which infers the separate goal-directed and habitual cognitive processes driving posting...
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Reposted by Adam Pettitt, PhD 🏳️‍🌈
Noah Greifer @noahgreifer.bsky.social · 16/11/2024
#Rstats `MatchIt` v4.6.0 is out! `MatchIt` implements propensity score matching and other matching methods for causal effect estimation. This isn't a major release, but here are the main updates: 🧵 #causalsky #econsky #episky #statsky
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Benjamin Getenet @benjamingetenet.fr · 16/11/2024
Network analysis is reshaping mental health research by moving beyond traditional models. It uncovers complex links between psychological variables, offering new insights into mental disorders. A promising step toward more effective understanding and treatment. #MentalHealth #Psychology
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Joshua J. Friedman @joshuajfriedman.com · 21/02/2024
Ahh, this is a little funny if you’re not used to using feeds, because it’s essentially a workaround. Bluesky doesn’t have a normal bookmarking feature yet. But informally, if you reply to a post with that pin emoji, it’ll show up in this feed (which only shows the pins of whoever’s looking at it)
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Daniel P. Moriarity @dpmoriarity.bsky.social · 16/11/2024
Doesn't help you amplify posts to others, but you can activate the ability to see likes from people you follow on your "following" feed by a) customizing your following feed (screenshot, h/t @drrodebaugh.bsky.social ) + subscribing to this feed bsky.app/profile/did:... (h/t @davidcarroll.org)
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Bob C-J and Geoff Cumming @thenewstats.bsky.social · 13/11/2024
Tired: comparing means Wired: comparing medians! esci and statpsych let you compare medians for simple & complex designs. That's right, you can express an interaction as a difference in the difference of *medians*. dgbonett.github.io/statpsych/ rcalinjageman.github.io/esci/ #stats #neuroskynce
Code and output for comparing medians across a 2x2 factorial design with esci.
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Sharon Machlis @smachlis.bsky.social · 13/11/2024
There's a CustomGPT specifically for R and RStudio -- that is, ChatGPT with prompts specifically focused on R. It should be usable for free ChatGPT accounts, not only paid ones. By Jose A Fernandez Calvo chatgpt.com/g/g-iedyANQt... #GenAI #RStats #RStudio #ChatGPT
chatgpt.com
ChatGPT - R and R Studio Tutor
GPT Studio for R or R Studio students and users
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