Aaron Fisher
@aaronjfisher.bsky.social
Associate Professor of Psychology | University of California, Berkeley.
Interested in Idiographic Science, Group-to-Individual Generalizability, and Personalization. EMA, time series, physiology, methods and statistics.
Interested in Idiographic Science, Group-to-Individual Generalizability, and Personalization. EMA, time series, physiology, methods and statistics.
LFG. Love that this came from the faculty and staff. Trust people, not institutions.
BREAKING: In AAUP et al v. Trump (wall-to-wall union lawsuit challenging the administration’s unlawful use of TItle VI to reshape the University of California system), the faculty and staff of the UC system WON!!!
We were granted our preliminary injunction! @aaup.org
We were granted our preliminary injunction! @aaup.org
November 15, 2025 at 12:29 AM
LFG. Love that this came from the faculty and staff. Trust people, not institutions.
Reposted by Aaron Fisher
“Metacognition” has become increasingly important to advance mental health understanding and treatment, but integration between fields has been difficult with different methods and conceptualizations. We propose bridging these perspectives under a unified hierarchical framework. (2/3)
November 12, 2025 at 1:50 PM
“Metacognition” has become increasingly important to advance mental health understanding and treatment, but integration between fields has been difficult with different methods and conceptualizations. We propose bridging these perspectives under a unified hierarchical framework. (2/3)
I'm teaching the honors seminar this year and currently reading and commenting on their introductions. Apparently there is a widely cited paper in education that is Fuchs & Fuchs, 2006 and I just love that so much.
November 12, 2025 at 4:39 AM
I'm teaching the honors seminar this year and currently reading and commenting on their introductions. Apparently there is a widely cited paper in education that is Fuchs & Fuchs, 2006 and I just love that so much.
Reposted by Aaron Fisher
One of my colleagues was just removed from her class “Diversity, Human Rights, and Social Justice” for showing a graphic discussing overt vs covert forms of racism…
c.org/ywjHswNppr
c.org/ywjHswNppr
Sign the Petition
Reinstate Lecturer Jessica Adams
c.org
November 11, 2025 at 6:25 PM
One of my colleagues was just removed from her class “Diversity, Human Rights, and Social Justice” for showing a graphic discussing overt vs covert forms of racism…
c.org/ywjHswNppr
c.org/ywjHswNppr
Reposted by Aaron Fisher
I will be reviewing applications for @unm.edu's Clinical Psychology as well as Diversity and Health Data Science Across the Lifespan PhD programs. Both deadlines are December 1! psych.unm.edu/graduate/ind...
Graduate Program Overview ::
Department of Psychology | The University of New Mexico
psych.unm.edu
November 7, 2025 at 11:14 PM
I will be reviewing applications for @unm.edu's Clinical Psychology as well as Diversity and Health Data Science Across the Lifespan PhD programs. Both deadlines are December 1! psych.unm.edu/graduate/ind...
Reposted by Aaron Fisher
I am pleased to share our paper showing that daily assessment improves the precision of #self-harm and #suicide prediction beyond the data available at the start of a hospital admission. psycnet.apa.org/record/2026-...
APA PsycNet
psycnet.apa.org
November 7, 2025 at 3:46 AM
I am pleased to share our paper showing that daily assessment improves the precision of #self-harm and #suicide prediction beyond the data available at the start of a hospital admission. psycnet.apa.org/record/2026-...
Reposted by Aaron Fisher
The President’s Postdoctoral Fellowship Program, PPFP, has been a jewel in the crown for faculty development and recruitment at the University of California for years and the results have been an expanded faculty with almost 100% tenure rates — unprecedented success.
November 2, 2025 at 11:01 AM
The President’s Postdoctoral Fellowship Program, PPFP, has been a jewel in the crown for faculty development and recruitment at the University of California for years and the results have been an expanded faculty with almost 100% tenure rates — unprecedented success.
FWIW, Penn State is an awesome place to do your PhD. Hugely underrated graduate institution.
Just bumping this -- I'll be recruiting a new graduate student this cycle, to start in fall 2026. So will my colleagues Karen Gasper and Reg Adams. I'm currently the area coordinator. Reach out if you have questions about Penn State Social Psychology -- WE ARE!
Although most of my photos right now are of State College autumn, here's Happy Valley from the sky this August. It was awe-inspiring to get this view.
So, come join us here! I'll be recruiting a graduate student to the Empathy & Moral Psychology (EMP) Lab during this cycle, to start in fall 2026.
So, come join us here! I'll be recruiting a graduate student to the Empathy & Moral Psychology (EMP) Lab during this cycle, to start in fall 2026.
November 5, 2025 at 3:36 PM
FWIW, Penn State is an awesome place to do your PhD. Hugely underrated graduate institution.
Reposted by Aaron Fisher
California passes proposition 50, which will mean multiple anti-LGBTQ+ Republican congress people will likely lose their seat.
A continual bloodbath for anti-LGBTQ+ Republicans tonight.
A continual bloodbath for anti-LGBTQ+ Republicans tonight.
November 5, 2025 at 4:05 AM
California passes proposition 50, which will mean multiple anti-LGBTQ+ Republican congress people will likely lose their seat.
A continual bloodbath for anti-LGBTQ+ Republicans tonight.
A continual bloodbath for anti-LGBTQ+ Republicans tonight.
Reposted by Aaron Fisher
As a result, reproducibility speaks more to the design and specification of the experiment than the truth value of a given result.
November 5, 2025 at 3:33 AM
As a result, reproducibility speaks more to the design and specification of the experiment than the truth value of a given result.
Wait, am I *joy* scrolling right now??
November 5, 2025 at 3:04 AM
Wait, am I *joy* scrolling right now??
Reposted by Aaron Fisher
BIG BREAKING: Democrat Zohran Mamdani is elected Mayor of New York City, in the largest turnout vote since 1969. He becomes the first Muslim and immigrant mayor of New York City, and the first Muslim to be elected of a major U.S. city.
November 5, 2025 at 2:33 AM
BIG BREAKING: Democrat Zohran Mamdani is elected Mayor of New York City, in the largest turnout vote since 1969. He becomes the first Muslim and immigrant mayor of New York City, and the first Muslim to be elected of a major U.S. city.
Reposted by Aaron Fisher
Zohran at the rally for trans youth on february 8 ❣️ he was polling single digits.
June 25, 2025 at 4:51 AM
Zohran at the rally for trans youth on february 8 ❣️ he was polling single digits.
Reposted by Aaron Fisher
I’ve spent the last 8 years(!) working from the position that HiTOP relies too much on analyses of traditional diagnoses, baking in limitations of the DSM, and that we need to move to symptom-level analyses to fix it
It turns out that rebuilding HiTOP from the ground up doesn’t change much 💀
1/
It turns out that rebuilding HiTOP from the ground up doesn’t change much 💀
1/
November 4, 2025 at 8:27 PM
I’ve spent the last 8 years(!) working from the position that HiTOP relies too much on analyses of traditional diagnoses, baking in limitations of the DSM, and that we need to move to symptom-level analyses to fix it
It turns out that rebuilding HiTOP from the ground up doesn’t change much 💀
1/
It turns out that rebuilding HiTOP from the ground up doesn’t change much 💀
1/
Reposted by Aaron Fisher
Amid attacks on such work, NIH-led research links structural racism to increased heart disease. Story by @aniloza.bsky.social www.statnews.com/2025/10/31/s...
Amid attacks on such work, NIH-led research links structural racism to increased heart disease
NIH-led research on structural racism was published Friday, even as the Trump administration has cancelled and discredited such work.
www.statnews.com
November 3, 2025 at 2:53 PM
Amid attacks on such work, NIH-led research links structural racism to increased heart disease. Story by @aniloza.bsky.social www.statnews.com/2025/10/31/s...
I'd like to politely state for the record that the point being made in this thread *is* my point. The issue is the use of p values as inferential tools and the conditions under which those inferences are made. I even mention effect sizes as the appropriate inferential metric. There is no confusion.
There still seems to be a lot of confusion about significance testing in psych. No, p-values *don’t* become useless at large N. This flawed point also used to be framed as "too much power". But power isn't the problem – it's 1) unbalanced error rates and 2) the (lack of a) SESOI. 1/ >
But here's, the thing, p values and significance become useless at such large sample sizes. When you're dividing the coefficient by the SE and the sample size is in the tens of thousands, EVERYTHING IS SIGNIFICANT. All you're testing is whether the coefficient is different than zero.
October 31, 2025 at 4:38 PM
I'd like to politely state for the record that the point being made in this thread *is* my point. The issue is the use of p values as inferential tools and the conditions under which those inferences are made. I even mention effect sizes as the appropriate inferential metric. There is no confusion.
I want to comment on a piece of research that came to my attention yesterday that I think is a reflection of endemic problems in our field. The study was published in a top-tier journal and was covered by the national press. It had a very large sample (N>30,000) and several yearly time points.
October 30, 2025 at 6:59 PM
I want to comment on a piece of research that came to my attention yesterday that I think is a reflection of endemic problems in our field. The study was published in a top-tier journal and was covered by the national press. It had a very large sample (N>30,000) and several yearly time points.
If the proponents of the "P" factor weren't all famous grey hairs, would we be talking about it all?
October 28, 2025 at 3:10 PM
If the proponents of the "P" factor weren't all famous grey hairs, would we be talking about it all?
No model has any inherent worth. The value is derived from how the model is employed within the research question.
I'm always hesitant to teach cluster analysis in my ML for Psych class. I can only hope that I emphasize enough how worthless it is, that they never use it. (So why? I don't know, it's expected and it's in the book?)
October 27, 2025 at 6:33 PM
No model has any inherent worth. The value is derived from how the model is employed within the research question.
I think this is a function of hypostatization and model realism, and extends beyond cluster analysis. Modally, researchers in psychology don't spend much time considering assumptions and assume models = reality. The cluster analysis doesn't require justification because the clusters are 'real'.
It’s astonishing how many researchers seem to believe that a cluster analysis is such a sensible analysis that it needn’t even be justified through a coherent research question. Just cluster analysis go brrrrr
October 27, 2025 at 6:26 PM
I think this is a function of hypostatization and model realism, and extends beyond cluster analysis. Modally, researchers in psychology don't spend much time considering assumptions and assume models = reality. The cluster analysis doesn't require justification because the clusters are 'real'.
Reposted by Aaron Fisher
dope academic position alert:
aprecruit.berkeley.edu/JPF05162
aprecruit.berkeley.edu/JPF05162
Assistant Professor - Diversity and Democracy - Goldman School of Public Policy and the Othering & Belonging Institute
University of California, Berkeley is hiring. Apply now!
aprecruit.berkeley.edu
October 25, 2025 at 1:28 AM
dope academic position alert:
aprecruit.berkeley.edu/JPF05162
aprecruit.berkeley.edu/JPF05162
Reposted by Aaron Fisher
UC faculty and the @aaup.org demand the end of mandatory surveillance software use across the UC system. The future belongs to people, not to big brother!
www.science.org/content/arti...
www.science.org/content/arti...
University of California faculty push back against Big Brother cybersecurity mandate
School officials defend software as bulwark against ransomware, but professors fear potential surveillance of their devices
www.science.org
October 24, 2025 at 12:34 PM
UC faculty and the @aaup.org demand the end of mandatory surveillance software use across the UC system. The future belongs to people, not to big brother!
www.science.org/content/arti...
www.science.org/content/arti...
While acknowledging that all it takes is one serious Jaylen Brown injury to derail the whole Celtics train this season, I'm planting my flag on 46 wins this year. Let's go C's.
October 22, 2025 at 8:32 PM
While acknowledging that all it takes is one serious Jaylen Brown injury to derail the whole Celtics train this season, I'm planting my flag on 46 wins this year. Let's go C's.
Reposted by Aaron Fisher
We built the openESM database:
▶️60 openly available experience sampling datasets (16K+ participants, 740K+ obs.) in one place
▶️Harmonized (meta-)data, fully open-source software
▶️Filter & search all data, simply download via R/Python
Find out more:
🌐 openesmdata.org
📝 doi.org/10.31234/osf...
▶️60 openly available experience sampling datasets (16K+ participants, 740K+ obs.) in one place
▶️Harmonized (meta-)data, fully open-source software
▶️Filter & search all data, simply download via R/Python
Find out more:
🌐 openesmdata.org
📝 doi.org/10.31234/osf...
October 22, 2025 at 7:34 PM
We built the openESM database:
▶️60 openly available experience sampling datasets (16K+ participants, 740K+ obs.) in one place
▶️Harmonized (meta-)data, fully open-source software
▶️Filter & search all data, simply download via R/Python
Find out more:
🌐 openesmdata.org
📝 doi.org/10.31234/osf...
▶️60 openly available experience sampling datasets (16K+ participants, 740K+ obs.) in one place
▶️Harmonized (meta-)data, fully open-source software
▶️Filter & search all data, simply download via R/Python
Find out more:
🌐 openesmdata.org
📝 doi.org/10.31234/osf...
Reposted by Aaron Fisher
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
October 22, 2025 at 12:14 PM
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️
GAMEDAY ☘️