Zachary Cohen
@depressionlab.bsky.social
assistant prof. Personalized Treatment Lab @uarizona clinical psychology, intervention science. Precision Mental Health/Digital Therapy. Dad+Husband. He/him.
Pinned
Interpretation Issues With the Patient Health Questionnaire Instructions
This survey study assesses whether responses to the Patient Health Questionnaire reflect symptom frequency and severity.
jamanetwork.com
1/n Out today in @jamapsychiatry.com: Interpretation Issues With the Patient Health Questionnaire Instructions. We find troubling variability in whether people think they should respond based on the frequency of the Sx or the frequency of being bothered by the Sx.
jamanetwork.com/journals/jam...
jamanetwork.com/journals/jam...
Reposted by Zachary Cohen
Cool study in JAMA Psychiatry confirms what many have suspected for a while: PHQ (depression questionnaire) instructions are widely misinterpreted by patients. It is unfortunate that a questionnaire as shitty as PHQ-9 has become so ingrained & ubiquitous
jamanetwork.com/journals/jam...
jamanetwork.com/journals/jam...
Interpretation Issues With the Patient Health Questionnaire Instructions
This survey study assesses whether responses to the Patient Health Questionnaire reflect symptom frequency and severity.
jamanetwork.com
December 23, 2025 at 3:09 PM
Cool study in JAMA Psychiatry confirms what many have suspected for a while: PHQ (depression questionnaire) instructions are widely misinterpreted by patients. It is unfortunate that a questionnaire as shitty as PHQ-9 has become so ingrained & ubiquitous
jamanetwork.com/journals/jam...
jamanetwork.com/journals/jam...
Reposted by Zachary Cohen
Banger by @margaritap.bsky.social @shirleybwang.bsky.social @eikofried.bsky.social et al, in JAMA Psych: “the PHQ’s use rests on a fragile foundation that might not bear the weight of research and clinical decision-making.”
jamanetwork.com/journals/jam...
jamanetwork.com/journals/jam...
Interpretation Issues With the Patient Health Questionnaire Instructions
This survey study assesses whether responses to the Patient Health Questionnaire reflect symptom frequency and severity.
jamanetwork.com
December 23, 2025 at 5:18 PM
Banger by @margaritap.bsky.social @shirleybwang.bsky.social @eikofried.bsky.social et al, in JAMA Psych: “the PHQ’s use rests on a fragile foundation that might not bear the weight of research and clinical decision-making.”
jamanetwork.com/journals/jam...
jamanetwork.com/journals/jam...
Reposted by Zachary Cohen
Our university press team asked me a few questions in regards to the new chair on Mental Health & Data Science. I sketch a bit of a vision on the importance of transdisciplinary work, and some obstacles to overcome.
www.universiteitleiden.nl/en/news/2025...
www.universiteitleiden.nl/en/news/2025...
Transdisciplinary work is fantastic, but requires dedicated efforts from all sides to understand each other’
Eiko Fried has been appointed professor of Mental Health & Data Science. This combined chair neatly fits the view that understanding complex mental health issues require the integration of statistical...
www.universiteitleiden.nl
December 19, 2025 at 8:18 AM
Our university press team asked me a few questions in regards to the new chair on Mental Health & Data Science. I sketch a bit of a vision on the importance of transdisciplinary work, and some obstacles to overcome.
www.universiteitleiden.nl/en/news/2025...
www.universiteitleiden.nl/en/news/2025...
Reposted by Zachary Cohen
1/ Our paper years in the making is finally out!
TL;DR even very strong effects (d=1.00) can be attenuated by sampling from populations where there is variability in their likelihood of natural improvement (e.g., mild depression cases remitting on their own)
www.sciencedirect.com/science/arti...
TL;DR even very strong effects (d=1.00) can be attenuated by sampling from populations where there is variability in their likelihood of natural improvement (e.g., mild depression cases remitting on their own)
www.sciencedirect.com/science/arti...
Effects of patient response pattern distributions on comparisons of psychosocial treatments for major depressive disorder
The pharmaceutical industry has paid more attention to potential variability in depressed patients' ability to benefit from antidepressants vs. placeb…
www.sciencedirect.com
December 18, 2025 at 3:30 PM
1/ Our paper years in the making is finally out!
TL;DR even very strong effects (d=1.00) can be attenuated by sampling from populations where there is variability in their likelihood of natural improvement (e.g., mild depression cases remitting on their own)
www.sciencedirect.com/science/arti...
TL;DR even very strong effects (d=1.00) can be attenuated by sampling from populations where there is variability in their likelihood of natural improvement (e.g., mild depression cases remitting on their own)
www.sciencedirect.com/science/arti...
Nice writeup of our new study in @jamapsychiatry.com by Kyle Mittan, a colleague here at @uarizona.bsky.social
news.arizona.edu/news/confuse...
news.arizona.edu/news/confuse...
December 17, 2025 at 5:13 PM
Nice writeup of our new study in @jamapsychiatry.com by Kyle Mittan, a colleague here at @uarizona.bsky.social
news.arizona.edu/news/confuse...
news.arizona.edu/news/confuse...
1/n Out today in @jamapsychiatry.com: Interpretation Issues With the Patient Health Questionnaire Instructions. We find troubling variability in whether people think they should respond based on the frequency of the Sx or the frequency of being bothered by the Sx.
jamanetwork.com/journals/jam...
jamanetwork.com/journals/jam...
Interpretation Issues With the Patient Health Questionnaire Instructions
This survey study assesses whether responses to the Patient Health Questionnaire reflect symptom frequency and severity.
jamanetwork.com
December 17, 2025 at 5:11 PM
1/n Out today in @jamapsychiatry.com: Interpretation Issues With the Patient Health Questionnaire Instructions. We find troubling variability in whether people think they should respond based on the frequency of the Sx or the frequency of being bothered by the Sx.
jamanetwork.com/journals/jam...
jamanetwork.com/journals/jam...
Inviting submissions to a new special issue on precision and personalized treatment approaches led by @cherilev.bsky.social and @aaronjfisher.bsky.social! It’s gonna be a fantastic collection so send us your favorite new work :) www.sciencedirect.com/special-issu...
Behavior Therapy | ScienceDirect.com by Elsevier - Behavior Therapy | ScienceDirect.com by Elsevier
Read the latest articles of Behavior Therapy at ScienceDirect.com, Elsevier’s leading platform of peer-reviewed scholarly literature
www.sciencedirect.com
December 17, 2025 at 4:23 AM
Inviting submissions to a new special issue on precision and personalized treatment approaches led by @cherilev.bsky.social and @aaronjfisher.bsky.social! It’s gonna be a fantastic collection so send us your favorite new work :) www.sciencedirect.com/special-issu...
Reposted by Zachary Cohen
Are you working in the personalized treatment/ precision medicine space?
If so my co-editors & I would love to review your work for a new SPECIAL ISSUE in Behavior Therapy on personalization in mental health.
More info here:
www.sciencedirect.com/special-issu...
@depressionlab.bsky.social
If so my co-editors & I would love to review your work for a new SPECIAL ISSUE in Behavior Therapy on personalization in mental health.
More info here:
www.sciencedirect.com/special-issu...
@depressionlab.bsky.social
Behavior Therapy | ScienceDirect.com by Elsevier - Behavior Therapy | ScienceDirect.com by Elsevier
Read the latest articles of Behavior Therapy at ScienceDirect.com, Elsevier’s leading platform of peer-reviewed scholarly literature
www.sciencedirect.com
December 17, 2025 at 1:28 AM
Are you working in the personalized treatment/ precision medicine space?
If so my co-editors & I would love to review your work for a new SPECIAL ISSUE in Behavior Therapy on personalization in mental health.
More info here:
www.sciencedirect.com/special-issu...
@depressionlab.bsky.social
If so my co-editors & I would love to review your work for a new SPECIAL ISSUE in Behavior Therapy on personalization in mental health.
More info here:
www.sciencedirect.com/special-issu...
@depressionlab.bsky.social
Reposted by Zachary Cohen
🚨Model Checking for Vector Autoregressive Models 🚨
In a new preprint, @joranjongerling.bsky.social, @bsiepe.bsky.social, @sachaepskamp.bsky.social, Lourens Waldorp and I provide a tutorial on model checking for Vector Autoregressive (VAR) models: osf.io/preprints/ps...
In a new preprint, @joranjongerling.bsky.social, @bsiepe.bsky.social, @sachaepskamp.bsky.social, Lourens Waldorp and I provide a tutorial on model checking for Vector Autoregressive (VAR) models: osf.io/preprints/ps...
December 3, 2025 at 6:52 AM
🚨Model Checking for Vector Autoregressive Models 🚨
In a new preprint, @joranjongerling.bsky.social, @bsiepe.bsky.social, @sachaepskamp.bsky.social, Lourens Waldorp and I provide a tutorial on model checking for Vector Autoregressive (VAR) models: osf.io/preprints/ps...
In a new preprint, @joranjongerling.bsky.social, @bsiepe.bsky.social, @sachaepskamp.bsky.social, Lourens Waldorp and I provide a tutorial on model checking for Vector Autoregressive (VAR) models: osf.io/preprints/ps...
As the founding president of the EikoBöt fanclub I hereby declare today EikoDäy! Congratulations Dr @eikofried.bsky.social, Sir Eik of Ried. Honored to walk this strange sphere with you.
December 1, 2025 at 12:11 PM
As the founding president of the EikoBöt fanclub I hereby declare today EikoDäy! Congratulations Dr @eikofried.bsky.social, Sir Eik of Ried. Honored to walk this strange sphere with you.
Reposted by Zachary Cohen
My time as Editor of AMPPS is coming to an end-- here are some parting thoughts. journals.sagepub.com/doi/full/10.... .
Taking Stock of Advances in Methods and Practices in Psychological Science at the End of the Beginning - David A. Sbarra, 2025
journals.sagepub.com
November 26, 2025 at 7:10 PM
My time as Editor of AMPPS is coming to an end-- here are some parting thoughts. journals.sagepub.com/doi/full/10.... .
Reposted by Zachary Cohen
New method to estimate heterogeneity of treatment effects by comparing the cumulative response distributions for the treatment vs.
www.sciencedirect.com/science/arti...
@f2harrell.bsky.social @stephensenn.bsky.social
www.sciencedirect.com/science/arti...
@f2harrell.bsky.social @stephensenn.bsky.social
November 12, 2025 at 7:49 AM
New method to estimate heterogeneity of treatment effects by comparing the cumulative response distributions for the treatment vs.
www.sciencedirect.com/science/arti...
@f2harrell.bsky.social @stephensenn.bsky.social
www.sciencedirect.com/science/arti...
@f2harrell.bsky.social @stephensenn.bsky.social
Reposted by Zachary Cohen
I'm back! In this experiment we had 39 participants choose between 8 different PhD programs which varied in terms of region, application materials, prestige, and fees. Importantly, two of the programs had a GRE requirement and two were equivalent but did not:
November 11, 2025 at 9:34 PM
I'm back! In this experiment we had 39 participants choose between 8 different PhD programs which varied in terms of region, application materials, prestige, and fees. Importantly, two of the programs had a GRE requirement and two were equivalent but did not:
Reposted by Zachary Cohen
What a week! After 5 days, the #mitnb workshop has come to an end. We had a keynote on time scales and two workshops on careless responding and reliability. The central part of the workshops were the hackathons. We had super diverse hackathons, all designed to assess measurement in #ESM. (1/4)
November 7, 2025 at 6:24 PM
Reposted by Zachary Cohen
ladies and gentlemen...we got him
October 30, 2025 at 7:10 PM
ladies and gentlemen...we got him
New paper in Journal of Affective Disorders led by Olivia Losiewicz: Daily spread of positive affect is associated with subsequent well-being: A study of idiographic network analysis and emotional inertia. www.sciencedirect.com/science/arti...
Daily spread of positive affect is associated with subsequent well-being: A study of idiographic network analysis and emotional inertia
Emotional inertia, or the persistence of affect over time, and emotion network density, a measurement of the interconnected or relatedness of one's em…
www.sciencedirect.com
October 29, 2025 at 5:17 PM
New paper in Journal of Affective Disorders led by Olivia Losiewicz: Daily spread of positive affect is associated with subsequent well-being: A study of idiographic network analysis and emotional inertia. www.sciencedirect.com/science/arti...
Tenure track assistant professor @uarizona Psychology Department Clinical Area; many areas of emphasis including the development of next generation, scalable assessment or intervention tools. Come be our colleague! Supportive/awesome colleagues & students arizona.csod.com/ux/ats/caree...
Assistant Professor, Psychology (T/TE)
The candidate will be
expected to build and sustain an externally funded, nationally recognized
research program, provide effective instruction at the...
arizona.csod.com
October 27, 2025 at 10:24 AM
Tenure track assistant professor @uarizona Psychology Department Clinical Area; many areas of emphasis including the development of next generation, scalable assessment or intervention tools. Come be our colleague! Supportive/awesome colleagues & students arizona.csod.com/ux/ats/caree...
Reposted by Zachary Cohen
🔥OUT NOW IN JCCP🔥: Over the moon to share a new conceptual piece in which Carmen McLean and I propose a potential #deimplementation framework targeting unsupported⚠️, proven ineffective⛔️, and potentially harmful therapies☠️. 1/3
psycnet.apa.org/doiLanding?d...
#PsychSky #AcademicSky #PsychSciSky
psycnet.apa.org/doiLanding?d...
#PsychSky #AcademicSky #PsychSciSky
October 24, 2025 at 7:50 AM
🔥OUT NOW IN JCCP🔥: Over the moon to share a new conceptual piece in which Carmen McLean and I propose a potential #deimplementation framework targeting unsupported⚠️, proven ineffective⛔️, and potentially harmful therapies☠️. 1/3
psycnet.apa.org/doiLanding?d...
#PsychSky #AcademicSky #PsychSciSky
psycnet.apa.org/doiLanding?d...
#PsychSky #AcademicSky #PsychSciSky
Reposted by Zachary Cohen
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...
preprint of Douglas et al's "Assessing the feasibility of large-scale digital sensing for depression and anxiety: The Digital Mental Health Study." Work led by Nelson Freimer @ the UCLA Depression Grand Challenge. comprehensive assessment of almost 4K followed for 12m www.medrxiv.org/content/10.1...
Assessing the feasibility of large-scale digital sensing for depression and anxiety: The Digital Mental Health Study
Data passively obtained from smartphones and wearables can provide nearly continuous objective information that enables quantification of states and traits across broad physiological, behavioral, and ...
www.medrxiv.org
October 21, 2025 at 3:25 PM
preprint of Douglas et al's "Assessing the feasibility of large-scale digital sensing for depression and anxiety: The Digital Mental Health Study." Work led by Nelson Freimer @ the UCLA Depression Grand Challenge. comprehensive assessment of almost 4K followed for 12m www.medrxiv.org/content/10.1...
Reposted by Zachary Cohen
So grateful for everyone who helped make allcove San Juan Capistrano possible from our youth advisors, to our funders, to our clinicians, this is quite an accomplishment!!
Cofounder @stephenschueller.bsky.social is stoked at Thursday's ribbon cutting for of allcove San Juan Capistrano. The @ucirvine.bsky.social psychology professor describes the youth wellness center's current and future services. Learn more here: ow.ly/uGi450XaOjc
October 16, 2025 at 1:15 AM
So grateful for everyone who helped make allcove San Juan Capistrano possible from our youth advisors, to our funders, to our clinicians, this is quite an accomplishment!!
Incredibly unfair to all the 2nd year students and clinical psychology students who have spent months preparing their applications - changes to this year’s NSF GRFP don’t allow Y2 or clinical psychology students to apply… www.nsf.gov/funding/oppo...
September 26, 2025 at 9:32 PM
Incredibly unfair to all the 2nd year students and clinical psychology students who have spent months preparing their applications - changes to this year’s NSF GRFP don’t allow Y2 or clinical psychology students to apply… www.nsf.gov/funding/oppo...
We’re recruiting a Director for @uarizona.bsky.social's newly renovated Behavioral Health Clinic, a core member of our clinical faculty who will help lead grad clinical training. Review starts soon and will continue until we fill the position. Please share widely! arizona.csod.com/ux/ats/caree...
September 20, 2025 at 9:42 PM
We’re recruiting a Director for @uarizona.bsky.social's newly renovated Behavioral Health Clinic, a core member of our clinical faculty who will help lead grad clinical training. Review starts soon and will continue until we fill the position. Please share widely! arizona.csod.com/ux/ats/caree...
Reposted by Zachary Cohen
Postdoc with us in Columbus! 🌰
I'm pumped to recruit a 1-2 year postdoc working on:
- mechanisms of change in treatment
- treatment personalization
- emotion reg
With a breakdown of:
50% research
30% treatment
20% mentorship/collaboration/conferences
osu.wd1.myworkdayjobs.com/OSUCareers/j...
I'm pumped to recruit a 1-2 year postdoc working on:
- mechanisms of change in treatment
- treatment personalization
- emotion reg
With a breakdown of:
50% research
30% treatment
20% mentorship/collaboration/conferences
osu.wd1.myworkdayjobs.com/OSUCareers/j...
Post Doctoral Scholar
Screen reader users may encounter difficulty with this site. For assistance with applying, please contact hr-accessibleapplication@osu.edu. If you have questions while submitting an application, pleas...
osu.wd1.myworkdayjobs.com
September 18, 2025 at 5:47 PM
Postdoc with us in Columbus! 🌰
I'm pumped to recruit a 1-2 year postdoc working on:
- mechanisms of change in treatment
- treatment personalization
- emotion reg
With a breakdown of:
50% research
30% treatment
20% mentorship/collaboration/conferences
osu.wd1.myworkdayjobs.com/OSUCareers/j...
I'm pumped to recruit a 1-2 year postdoc working on:
- mechanisms of change in treatment
- treatment personalization
- emotion reg
With a breakdown of:
50% research
30% treatment
20% mentorship/collaboration/conferences
osu.wd1.myworkdayjobs.com/OSUCareers/j...