Adam Pettitt, PhD 🏳️🌈
@adamthislife.bsky.social
Clinical psychologist, digital mental health, statistics, data science, cats (in no particular order).
Reposted by Adam Pettitt, PhD 🏳️🌈
You will be visited by three ghosts
December 25, 2024 at 3:00 PM
You will be visited by three ghosts
Reposted by Adam Pettitt, PhD 🏳️🌈
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
December 11, 2024 at 7:29 AM
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
Reposted by Adam Pettitt, PhD 🏳️🌈
Hot damn if this is as useful as it sounds 💘
Introducing PowerLMM.js!
A new tool for power analysis of longitudinal linear mixed-effects models (LMMs) – with support for missing data, plus non-inferiority and equivalence tests.
powerlmmjs.rpsychologist.com
Would really appreciate your feedback as I refine this app! Details below 🧵👇
A new tool for power analysis of longitudinal linear mixed-effects models (LMMs) – with support for missing data, plus non-inferiority and equivalence tests.
powerlmmjs.rpsychologist.com
Would really appreciate your feedback as I refine this app! Details below 🧵👇
December 11, 2024 at 2:19 PM
Hot damn if this is as useful as it sounds 💘
Reposted by Adam Pettitt, PhD 🏳️🌈
📊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-...
APA PsycNet
psycnet.apa.org
December 6, 2024 at 2:15 AM
📊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-...
Reposted by Adam Pettitt, PhD 🏳️🌈
📊 #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....
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....
December 6, 2024 at 1:10 AM
📊 #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....
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....
Reposted by Adam Pettitt, PhD 🏳️🌈
Doing a deeper dive into reflective vs. formative modeling, thanks to some wonderful reviewers.
#StatsSky #AcademicSky
pdfs.semanticscholar.org/d156/8a44bb3...
#StatsSky #AcademicSky
pdfs.semanticscholar.org/d156/8a44bb3...
December 5, 2024 at 9:19 PM
Doing a deeper dive into reflective vs. formative modeling, thanks to some wonderful reviewers.
#StatsSky #AcademicSky
pdfs.semanticscholar.org/d156/8a44bb3...
#StatsSky #AcademicSky
pdfs.semanticscholar.org/d156/8a44bb3...
Reposted by Adam Pettitt, PhD 🏳️🌈
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...
www.the100.ci/2024/12/05/w...
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...
www.the100.ci
December 5, 2024 at 2:47 PM
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...
www.the100.ci/2024/12/05/w...
Reposted by Adam Pettitt, PhD 🏳️🌈
🚨 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...
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
osf.io
November 29, 2024 at 7:47 PM
🚨 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...
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...
Reposted by Adam Pettitt, PhD 🏳️🌈
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?
- 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?
Replication is reliability, not validity. You can do an analysis consistently wrong. You have have an unreliable but truthful (on average) signal
We are having a reliability movement where we need to have a validity movement
We are having a reliability movement where we need to have a validity movement
🌲
not reproducible ≠ wrong/false/fluke
reproducible ≠ true
not reproducible ≠ poor science
reproducible ≠ good science
reproducibility of results is not a reliable indicator of truth/research quality/epistemic progress.
replication of a poorly designed study is another poorly designed study.
🌲
not reproducible ≠ wrong/false/fluke
reproducible ≠ true
not reproducible ≠ poor science
reproducible ≠ good science
reproducibility of results is not a reliable indicator of truth/research quality/epistemic progress.
replication of a poorly designed study is another poorly designed study.
🌲
November 28, 2024 at 4:12 PM
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?
- 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?
Reposted by Adam Pettitt, PhD 🏳️🌈
#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/
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/
November 24, 2024 at 7:32 PM
#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/
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/
Reposted by Adam Pettitt, PhD 🏳️🌈
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
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
November 23, 2024 at 5:47 PM
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
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
Reposted by Adam Pettitt, PhD 🏳️🌈
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?
🧵👇
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?
🧵👇
November 23, 2024 at 1:17 PM
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?
🧵👇
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?
🧵👇
Reposted by Adam Pettitt, PhD 🏳️🌈
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/jamiaopen/ar...
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
academic.oup.com
November 23, 2024 at 3:04 AM
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/jamiaopen/ar...
In case no one has told you, go watch Wicked.
November 22, 2024 at 8:32 PM
In case no one has told you, go watch Wicked.
Reposted by Adam Pettitt, PhD 🏳️🌈
When a study talks about various things that could bias estimates but never explicitly addresses the analysis goal in the first place
November 20, 2024 at 4:24 AM
When a study talks about various things that could bias estimates but never explicitly addresses the analysis goal in the first place
Reposted by Adam Pettitt, PhD 🏳️🌈
Do you like network psychometrics? Are you interested in Exploratory Graph Analysis and related techniques? Check out our new website: 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 ...
r-ega.net
November 18, 2024 at 1:45 PM
Do you like network psychometrics? Are you interested in Exploratory Graph Analysis and related techniques? Check out our new website: r-ega.net
Reposted by Adam Pettitt, PhD 🏳️🌈
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...
'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...
November 18, 2024 at 11:43 AM
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...
'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...
Reposted by Adam Pettitt, PhD 🏳️🌈
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
osf.io/preprints/ps...
#socialpsyc #psychology #PsychSciSky #prejudice
November 18, 2024 at 2:20 PM
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
osf.io/preprints/ps...
#socialpsyc #psychology #PsychSciSky #prejudice
Reposted by Adam Pettitt, PhD 🏳️🌈
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
Then, the logit = log (p/1-p) is just another y axis on this chart
November 19, 2024 at 1:47 AM
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
Then, the logit = log (p/1-p) is just another y axis on this chart
Reposted by Adam Pettitt, PhD 🏳️🌈
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
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
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...
www.nature.com
November 18, 2024 at 9:13 AM
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
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
Reposted by Adam Pettitt, PhD 🏳️🌈
🚨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
November 18, 2024 at 7:36 AM
🚨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
Reposted by Adam Pettitt, PhD 🏳️🌈
🚨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...
**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...
November 13, 2024 at 11:02 AM
🚨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...
**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...
Reposted by Adam Pettitt, PhD 🏳️🌈
#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
#causalsky #econsky #episky #statsky
November 16, 2024 at 6:16 PM
#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
#causalsky #econsky #episky #statsky
Reposted by Adam Pettitt, PhD 🏳️🌈
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
Our long didactic paper on #network analysis, written with many of the amazing scientists that work in the field is finally out in IJMPR and open access ! It was a long and collaborative effort two years in the making, but, it was worth it! Please repost onlinelibrary.wiley.com/doi/10.1002/...
Network analysis: An overview for mental health research
Network approaches to psychopathology have become increasingly common in mental health research, with many theoretical and methodological developments quickly gaining traction. This article illustrat...
onlinelibrary.wiley.com
November 16, 2024 at 2:02 PM
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