Josh Pearman @psipear
People Scientist, Researcher. Group dynamics of teams, individual differences, personality, and technology. PhD in Organizational Psych @ MSU linkedin.com/in/joshuapearm… Joined April 2011-
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Built a lightweight trace viewer to speed up LLM evals—heavily inspired by lessons from @sh_reya and @HamelHusain's evals course. Kept it simple: FastAPI + vanilla HTML/JS. Features: failure banner, execution-flow timeline (LLM ↔ tools), keyboard shortcuts, and an annotation…
I went for dinner with a “what-if” guy last night. You know the type. Smart, curious, intense. We sat down, ordered wine, and for a while it was normal. Work, travel, you know. I told him worked in R&D for 20 years. Then he leaned across the table and asked, dead serious: 1/
For those interested, here is a link to the final typeset power paper with @TheYiFeng: Hancock, G. R., & Feng, Y. (2026). nmax and the quest to restore caution, integrity, and practicality to the sample size planning process. Psychological Methods. yifengquant.github.io/Publications/H…
Not sure LAPD knew they were being watched here……
📝"Combining Psychology with Artificial Intelligence: What could possibly go wrong?” osf.io/preprints/psya… — Brief review paper by @o_guest and me, highlighting traps to avoid when combining Psych with AI, and why this is so important. Check out our proposed way forward! 🌟💡
Meanwhile, in reality:
Meanwhile, in reality: https://t.co/tRNZH15mMy
I keep telling these guys they should never accept any medical treatment made possible by NIH-funded research. But such an act of noble public service is beyond them
I keep telling these guys they should never accept any medical treatment made possible by NIH-funded research. But such an act of noble public service is beyond them
@Jarek_Dragon Has the UX ever improved for a product like this when taken public or bought by a public firm?
I'm not surprised at all, but this is surreal to see. This executive order is attempting to end disparate impact liability, repealing parts of the Civil Rights Act of 1964. The most significant law to protect civil rights and discrimination in hiring. Wow whitehouse.gov/presidential-a…
Isn't this just an assessment center?
Instead of this format where dumb people and opinions gets over-represented we should have a jubilee video where 20 climate scientists bully a climate change denier until they cry.
Instead of this format where dumb people and opinions gets over-represented we should have a jubilee video where 20 climate scientists bully a climate change denier until they cry.
OpenAI has launched Operator, an agent that can perform tasks in your browser. I asked it to complete a Qualtrics survey I created. The results are very promising for Operator but *very* concerning for survey researchers
Tired but happy to say this is out w @andrea_e_martin: Are Neurocognitive Representations 'Small Cakes'? We analyse theories of representation in neuroscience showing how vicious regress, e.g. the homunculus fallacy, is (sadly) alive and well — and importantly how to avoid it. 1/
This is one of the most interesting, and most deeply mistaken responses I've seen to the Marko Elez saga. @cremieuxrecueil's view, paraphrased, seems to be "You should be able to have any belief as long as it doesn't hinder your ability to do your job" But technical ability is…
Does the culture you grow up in shape the way you see the world? In a new Psych Review paper, @chazfirestone & I tackle this centuries-old question using the Müller-Lyer illusion as a case study. Come think through one of history's mysteries with us🧵(1/13):

Fred Oswald @FredOswald
3K Followers 2K Following I-O psychologist (what is that? https://t.co/fGo7AJj5dl); Scrabble(R) player; aspiring raconteur; likes/retweets may-or-may-not-be = endorsement
Christopher Wiese @DrChrisWiese
1K Followers 724 Following I-O Area Director & Assistant Professor at Georgia Tech researching #ExtremeTeams, #Commuting, and #Worker #WellBeing. Director of The Foundation Lab
lars @LarsUJohnson
2K Followers 2K Following God first! Half professor/half backyard BBQ enthusiast; Researching Leadership/DEI/Stressors (views = mine) ΩΨΦ HBCU Grad #NotSorry4Typos
Alicia Grandey, PhD @AliciaGrandey
2K Followers 525 Following @PSU_IO prof; seeking balance between productivity and wellbeing in research and life
Cort Rudolph @CortRudolph
1K Followers 893 Following Professor of Psychology. Quantitative Methods Enthusiast. Editor. Fellow. Si quaeris peninsulam amoenam circumspice. #DCTID
Dr Andrew M Naber @AndrewMNaber
1K Followers 2K Following Where personnel, psychology, policy, & tech meet. Views do not reflect those of the US Govt. @andrewmnaber.bsky.social https://t.co/a3FW6LvmXg
Mike Morrison @mikemorrison
12K Followers 2K Following #betterposter guy | Psychologist, Designer | Making scientists’ tools easier to use |📝UX @curvenote | 🦋https://t.co/sYJjjb9eFY
Bill Chopik @Chops310
5K Followers 4K Following CHOP-ick. Associate Professor of Social/Personality Psychology at Michigan State University My opinions do not reflect the views and opinions of my employer.
Paul Thoresen @surveyguy2
15K Followers 16K Following Champions evidence-based governance and coalition-building to tackle city challenges while critiquing ideological extremes.
Felix G., Ph.D. @IO_Psych_ONE
7K Followers 7K Following Senior Research Scientist in Fintech | IO-Psychology | People Analytics | Quant | Data Science
Katherine A. Sliter @KatherineSliter
4K Followers 4K Following PhD in #iopsych w/knack for stats & #analytics. She/her. #Runner. Openly obsessed w/horses, native gardening, historical costuming. Team #OxfordComma
Virginia Tech I-O Psy... @VTPsychologyIO
342 Followers 93 Following Twitter page for Virginia Tech's Industrial-Organizational Psychology program.
Jimmy Mundell @Jimmy_Mundell
2K Followers 1K Following People Analytics @Netflix | Adjunct Faculty @WeAreTouro | PhD in Industrial/Organizational Psychology | https://t.co/Q4kODBXvtU
Richard N. Landers @rnlanders
4K Followers 971 Following #iopsych professor and YouTube host who gave up on new "Twitter"; find me on LinkedIn and Threads
MSU Psychology @MsuPsychology
779 Followers 243 Following Official account for the Department of Psychology at Michigan State University. 📚 Striving to better understand human beings.🧠 👇 https://t.co/mIptbcVp4g
Rachael Pyram @rachaelpyram
462 Followers 232 Following #IOpsych PhD candidate at @michiganstateu interested in interpersonal dynamics at work | she/her
Michael Sliter @MikeSliter
3K Followers 3K Following Workplace psychologist. Professor turned leadership consultant. Author of Pandemonium Rising series, epic #grimdark fantasy. #amwriting #fantasybooks (he/him)
C. Allen Gorman @profallengorman
817 Followers 2K Following Father | I-O #Psychologist | #Professor @UABSchoolofBiz | @HaslamUT, @iopsyc_uno, & @ugapsychology Alum | Chief #Science Officer @ https://t.co/T6zkFD682T
Paul E. Spector @PaulESpector
2K Followers 657 Following Author, Blogger, Practitioner, Professor of Business Management, #iopsych & OB/HR Researcher, Research Methodologist, AAAS Fellow, Gamer, Woodworker.
Tylark the Destroyer @OrangeTylark
393 Followers 3K Following I'm Tylark (or Tyler). Let's be cool together. Baby Live2D rigger! Twitch Affiliate and a vtuber! pfp: Nikonundrum banner: by me!!!
Suzanne @suzanne5486964
468 Followers 391 Following Studying helps me to continuously grow and develop. Loving life
Georgia Hodkinson @GMaryHodkinson
1 Followers 32 Following
ovsky @ovsky4
25 Followers 351 Following
The Crimson Forge @thecrimsonforge
19 Followers 78 Following The Crimson Forge is an American-made, custom welding and metal fabrication company focused on creating and building high quality products and services.
Koushik Devarajan @Messidk90
474 Followers 8K Following MS @NCSU, ex-Schneiderite,NITT ice grad ,jack of all trades,barca fan,interested in mems microsystem,carnatic,travel,sports,gaming,art, dance and what not...
Anoop @amazedsaint
440 Followers 3K Following 🚀 Building a new type of discreet computer. O(N) to O(1). Reversible, geometrical & quantum computing. https://t.co/Z1CLKqoP6f
Brett Dladla @lekodladla
42 Followers 632 Following
Dom Chandler @Dom_Chandler_
48 Followers 2K Following
1 @texansfan59
95 Followers 5K Following
Disco Des @AeternaIux
114 Followers 486 Following Before disco, this country was a dancing wasteland.
Cooper @SingleMalt047
114 Followers 3K Following
Matthew @Matthew93379637
163 Followers 3K Following
Rob Howard @Rjhokc74
831 Followers 4K Following husband, father, caretaker, believer, entertainment & construction projects
Yuqi Jin @Lancet_1823
41 Followers 1K Following
Girish Chandrashekar @girishc_GC
365 Followers 5K Following Doctoral Researcher @VIT_univ , India | Interested in Nanoscience & Neuromorphic Computing | Indian Culture & Spirituality | A proud Bharatiya 🇮🇳
Batch @Batchelor
3K Followers 1K Following Generalist and Permanent Amateur; Optimize, Redesign, Transcend, goto Optimize (reductionist physicalist)
Mustfa @iqprogm1
4 Followers 2K Following
ΚΑΘΗΓΗΤΗΣ Π... @euphoria_damage
129 Followers 1K Following ΕΠΙΚΟΙΝΩΝΙΑ ΜΕ ΦΟΙΤΗΤΕΣ: ΤΕΤΑΡΤΗ 14:00-14:05, ΠΑΡΑΣΚΕΥΗ 06:00-08:00 ΤΟ ΠΡΩΙ
Jennifer Aniston @AnistonJen94736
18 Followers 725 Following I love all my fans can't do without them so if you are a fan
Black Heart @PampasOkello18
564 Followers 6K Following A kind and pure heart ❤️ Diehard Supporter of @ManUnited Strongest Admirer of @Makerere and @Cambridge_Uni Equal employment opportunity For All Advocate
Alan Coker @AlanCoker394985
150 Followers 2K Following
Uiwhaawnig @Uiwhaawnig7714
124 Followers 5K Following
Daisy @Jinchan88C88
16 Followers 95 Following
Slorteight @Slorteightwoek
155 Followers 3K Following
Nathaniel Haines @Nate__Haines
2K Followers 556 Following Paid to do p(b | a) p(a) p(a | b) = ——————— p(b)
Junsol Kim @JunsolK
449 Followers 993 Following Ph.D. student in Sociology @UChicago. Computational Social Science, LLM, Collective/Artificial Intelligence.
Douglas Guilbeault @DzGuilbeault
2K Followers 1K Following https://t.co/DGQwca7Wog | Assistant Prof. @StanfordGSB | Computational Culture Lab | Social Networks, Cognition, Cultural Evolution, AI
PersonalityPsychology... @PePsyPodcast
794 Followers 507 Following Podcast on the science of how people are different from one another, where these differences come from, how they develop, and why they matter.
Collins et al. Consul... @prime_writers16
354 Followers 6K Following Your preferred VIRTUAL ASSISTANT & WRITER (assignments: Online Classes: THESIS EXPERT): All courses (Undergrad & postgrad) WhatsApp: https://t.co/57zVmobYZ0
Aaroncaoo @Aaroncao38101
13 Followers 684 Following
Tuedeighs @Tuedeighs7wl
27 Followers 1K Following
Emily Hu @xemilyhu
436 Followers 435 Following MIT researcher • 💻 I study teams, communication, & computational social science • 🎓 Stanford, Wharton
Smeigh @Smeigh7t7k
47 Followers 1K Following
Lashaun601 @lashaun601
4 Followers 362 Following
Rob Chavez @robchavez
2K Followers 870 Following Former assistant professor and neurobumpkin at University of Oregon.
Pia Andresen @pk_andresen
137 Followers 164 Following Photographer joining academia for the job security | PhD Candidate @MS_Utrecht | Theoretical Psychology & Time Series Methods
Alllison @sammykira22
36 Followers 270 Following
Statare @StatareIRC
23 Followers 798 Following
Katie @marlene642
37 Followers 504 Following
Gesa @NoMarcusmoitaa
904 Followers 4K Following
Annayesha Sengupta @annayesha_s
4 Followers 61 Following MA app psych @amity_kolkata | alumna @uniofcalcutta | Blog https://t.co/RqTTv61PH7
Fred Oswald @FredOswald
3K Followers 2K Following I-O psychologist (what is that? https://t.co/fGo7AJj5dl); Scrabble(R) player; aspiring raconteur; likes/retweets may-or-may-not-be = endorsement
Dr. D. King @docdking11
1K Followers 901 Following She/her | Organizational Psychology Professor | NOLA, Spelman & DST woman | H-town resident | Tweets (Xs?) = my opinions & not professional advice
Christopher Wiese @DrChrisWiese
1K Followers 724 Following I-O Area Director & Assistant Professor at Georgia Tech researching #ExtremeTeams, #Commuting, and #Worker #WellBeing. Director of The Foundation Lab
Brenton Wiernik 🏳�... @bmwiernik
6K Followers 1K Following Work & personality psychologist, meta-analyst, applied statistician. Research scientist at Meta. Former academic. QRP: Queer regression practitioner. He/Him/His
lars @LarsUJohnson
2K Followers 2K Following God first! Half professor/half backyard BBQ enthusiast; Researching Leadership/DEI/Stressors (views = mine) ΩΨΦ HBCU Grad #NotSorry4Typos
Alicia Grandey, PhD @AliciaGrandey
2K Followers 525 Following @PSU_IO prof; seeking balance between productivity and wellbeing in research and life
Cort Rudolph @CortRudolph
1K Followers 893 Following Professor of Psychology. Quantitative Methods Enthusiast. Editor. Fellow. Si quaeris peninsulam amoenam circumspice. #DCTID
Dr Andrew M Naber @AndrewMNaber
1K Followers 2K Following Where personnel, psychology, policy, & tech meet. Views do not reflect those of the US Govt. @andrewmnaber.bsky.social https://t.co/a3FW6LvmXg
Mike Morrison @mikemorrison
12K Followers 2K Following #betterposter guy | Psychologist, Designer | Making scientists’ tools easier to use |📝UX @curvenote | 🦋https://t.co/sYJjjb9eFY
Eiko Fried @EikoFried
39K Followers 2K Following Associate Prof @UniLeiden. Mental health & data science (https://t.co/NHlcPRzyYW). Building an early warning system for depression (https://t.co/xKqSGrvQnU).
Bill Chopik @Chops310
5K Followers 4K Following CHOP-ick. Associate Professor of Social/Personality Psychology at Michigan State University My opinions do not reflect the views and opinions of my employer.
SIOP @SIOPtweets
12K Followers 392 Following The Society for Industrial and Organizational Psychology (SIOP) is a professional organization for those working in the field of I-O psychology.
iopsychmemes.bsky.soc... @iopsychmemes
5K Followers 66 Following “Surprisingly topical” memes about the best field ever: industrial-organizational psychology! https://t.co/K0tReu2hc6 Unofficially run by San Diego State I-O
Felix G., Ph.D. @IO_Psych_ONE
7K Followers 7K Following Senior Research Scientist in Fintech | IO-Psychology | People Analytics | Quant | Data Science
Tom Carpenter, PhD (@... @tcarpenter216
9K Followers 5K Following Data Scientist, Survey Scientist, People Scientist | #rstats, python, ai/ml, psychology
Matt Crayne @mattcrayne
2K Followers 837 Following Dad. Husband. Org psychologist & Prof. @UAlbanyBusiness. Whiskey enthusiast. BBQ novice. UConn superfan.
Katherine A. Sliter @KatherineSliter
4K Followers 4K Following PhD in #iopsych w/knack for stats & #analytics. She/her. #Runner. Openly obsessed w/horses, native gardening, historical costuming. Team #OxfordComma
Sam Hunter @dr_samhunter
825 Followers 354 Following Senior Scientist & Director of Academic Research @ Natl Counterterrorism, Innovation, Technology, and Education (NCITE) center (Professor of I-O Psychology)
Chelsea Parlett @ChelseaParlett
37K Followers 831 Following 📊Statistician, 👩🏻🏫Data Science Prof, ✍️Stats Communication. #statistics #scicomm #datascience #statstiktok 👩🏻💻 she/her
Ed Zitron @edzitron
95K Followers 5K Following Newsletter https://t.co/D5qDgUKaNR - Better Offline Podcast - https://t.co/pUoGsuaQTw - Column Business Insider - CEO at https://t.co/5idt8AyPqr - Award-Winning Tech PR
Armin Ronacher ⇌ @mitsuhiko
60K Followers 837 Following Creator of Flask; A decade at @getsentry; Building new things — love API design & AI. Bypassing Permissions. Husband and father of 3 — “more nuanced in person”
DSPy @DSPyOSS
11K Followers 50 Following An open-source declarative framework for building modular AI software. Programming—not prompting—LLMs via higher-level abstractions & optimizers.
DeepSeek @deepseek_ai
972K Followers 0 Following Unravel the mystery of AGI with curiosity. Answer the essential question with long-termism.
Herrington Darkholme @hd_nvim
7K Followers 3K Following 🌐 Frontend Vimmer ⚒️Open Source with @typescript @vuejs and @rustlang 💻 @KuaishouVideos 🚀 https://t.co/SLjF6No9qD is my hobby project
Simon Willison @simonw
117K Followers 6K Following Creator @datasetteproj, co-creator Django. PSF board. Hangs out with @natbat. He/Him. Mastodon: https://t.co/t0MrmnJW0K Bsky: https://t.co/OnWIyhX4CH
Prime Intellect @PrimeIntellect
48K Followers 28 Following find compute. train models. contribute to open superintelligence. https://t.co/ZRZOsRRbwr
Ken Liu @kenziyuliu
2K Followers 883 Following CS PhD @StanfordAILab @StanfordNLP w/ @percyliang @sanmikoyejo. Past: DeepMind, CMU, USydney 🇦🇺
Excalidraw @excalidraw
34K Followers 54 Following Whiteboard for hand-drawn diagrams: https://t.co/gYYAupqgPk 💬 https://t.co/wClmtW7mbA 🛠️ https://t.co/PtoCURvN0k More? https://t.co/sF1BI4nSLr
Anthropic @AnthropicAI
647K Followers 35 Following We're an AI safety and research company that builds reliable, interpretable, and steerable AI systems. Talk to our AI assistant @claudeai on https://t.co/FhDI3KQh0n.
Network Science Insti... @NUnetsi
10K Followers 298 Following Network Science Institute at Northeastern University
Parshin Shojaee @ParshinShojaee
3K Followers 1K Following PhD student @VT_CS | AI for Science, Math, Code, Reasoning | Intern @Apple | prev @Adobe
Jack Morris @jxmnop
46K Followers 995 Following research @cornell // language models, information theory, science of AI
NetSci 2026 @NetSciConf
2K Followers 672 Following Official account of the International School and Conference on Network Science. Boston, MA, USA -- June 1-5, 2026. #NetSci2026 also at https://t.co/yFjY9Omd3m
Charlie Marsh @charliermarsh
28K Followers 827 Following Building @astral_sh: Ruff, uv, and other high-performance Python tools. Prev: Staff engineer @SpringDiscovery, @KhanAcademy, BSE @PrincetonCS.
Wenting Zhao @wzhao_nlp
5K Followers 609 Following reasoning & llms @Alibaba_Qwen Opinions are my own
Myra Deng @myra_deng
1K Followers 138 Following aligning models @goodfireAI, prev @stanford and @twosigma
Samuel Marks @saprmarks
4K Followers 132 Following AI safety research @AnthropicAI. Prev postdoc in LLM interpretability with @davidbau, math PhD at @Harvard, director of technical programs at https://t.co/FxRv4QgERO
Internal Tech Emails @TechEmails
583K Followers 881 Following Internal tech industry emails that surface in public records. 🔍
𝔊𝔴𝔢𝔯𝔫 @gwern
65K Followers 106 Following Internet besserwisser; pedantic, mean reply guy. 𝘞𝘢𝘵𝘢𝘴𝘩𝘪 𝘬𝘪𝘯𝘪𝘯𝘢𝘳𝘪𝘮𝘢𝘴𝘶! (Follow requests ignored due to terrible UI.)
Goodfire @GoodfireAI
9K Followers 20 Following Advancing humanity's understanding of AI through interpretability research. Building the future of safe and powerful AI systems.
Anna Leshinskaya @AnnaLeshinskaya
1K Followers 918 Following Assistant Professor of Cognitive Science at UC Irvine; also @annaleshinskaya.bsky.social
the tiny corp @__tinygrad__
59K Followers 134 Following We make tinygrad and sell tinybox, the best perf/$ AI computer. $25k for 4x 5090 in a quiet box. Our mission is to commoditize the petaflop.
Aryaman Arora @aryaman2020
8K Followers 2K Following member of technical staff @stanfordnlp @TransluceAI
Dashun Wang @dashunwang
6K Followers 1K Following Kellogg Chair of Technology at Kellogg, Founding director, Center for Science of Science and Innovation, Northwestern University
MIT NLP @nlp_mit
4K Followers 52 Following NLP Group at @MIT_CSAIL! PIs: @yoonrkim @jacobandreas @lateinteraction @pliang279 @david_sontag, Jim Glass, @roger_p_levy
Neel Nanda @NeelNanda5
32K Followers 123 Following Mechanistic Interpretability lead DeepMind. Formerly @AnthropicAI, independent. In this to reduce AI X-risk. Neural networks can be understood, let's go do it!
Chris Olah @ch402
123K Followers 182 Following Reverse engineering neural networks at @AnthropicAI. Previously @distillpub, OpenAI Clarity Team, Google Brain. Personal account.
Christopher Manning @chrmanning
152K Followers 229 Following Founder, @stanfordnlp and cs224n. Assoc. Director, @StanfordHAI. Prof. CS & Linguistics, @Stanford. GP @aixventureshq. Australian🇦🇺. Do #NLProc & #AI. 👋
Jorvon Moss_Odd_Jayy @Odd_Jayy
24K Followers 679 Following Thoughts and Opinions are my own https://t.co/ygdxgGpBBH https://t.co/cQ8BlV2AQ4 https://t.co/vIKWFMgee4 https://t.co/cleOHvdIVl
Anna M. Fang @annamfang
1K Followers 244 Following Ph.D. at Carnegie Mellon @SCSatCMU @cmuhcii. HCI for mental health.
Psychometric Society @pmetricsoc
1K Followers 1 Following Founded in 1935. Advancing quantitative methodology in the behavioral sciences.
Stanford NLP Group @stanfordnlp
172K Followers 296 Following Computational Linguists—Natural Language—Machine Learning @chrmanning @jurafsky @percyliang @ChrisGPotts @tatsu_hashimoto @MonicaSLam @Diyi_Yang @StanfordAILab
Nathaniel Haines @Nate__Haines
2K Followers 556 Following Paid to do p(b | a) p(a) p(a | b) = ——————— p(b)
Junsol Kim @JunsolK
449 Followers 993 Following Ph.D. student in Sociology @UChicago. Computational Social Science, LLM, Collective/Artificial Intelligence.
Microsoft Research @MSFTResearch
560K Followers 2K Following We advance science and technology to benefit humanity.
Douglas Guilbeault @DzGuilbeault
2K Followers 1K Following https://t.co/DGQwca7Wog | Assistant Prof. @StanfordGSB | Computational Culture Lab | Social Networks, Cognition, Cultural Evolution, AI
Matt Groh @mattgroh
2K Followers 1K Following Assistant professor @NorthwesternU @KelloggSchool | PhD @MIT @medialab | human AI collaboration | computational social science | cognitive science
Dwarkesh Patel @dwarkesh_sp
131K Followers 920 Following Host of @dwarkeshpodcast https://t.co/3SXlu7fy6N https://t.co/4DPAxODFYi https://t.co/hQfIWdM1Un
Yury Zablotski @yuzaR___
2K Followers 302 Following Data Scientist / Statistician at LMU, Munich. I like to learn and try to explain complex things in a simple way, so that my grandma can understand.
Google DeepMind @GoogleDeepMind
1.2M Followers 279 Following We’re a team of scientists, engineers, ethicists and more, committed to solving intelligence, to advance science and benefit humanity.
Jeremy Howard @jeremyphoward
261K Followers 6K Following 🇦🇺 Co-founder: @AnswerDotAI & @FastDotAI ; Prev: professor @ UQ; Stanford fellow; @kaggle president; @fastmail/@enlitic/etc founder https://t.co/16UBFTX7mo
Dan Goldstein @dggoldst
11K Followers 1K Following Partner Research Manager at Microsoft Research NYC. AI, Economics, Decision Science.