iiinova — where your digital self keeps evolving

Krajbich Lab @krajbichlab.bsky.social · 23/07/2026

Excited to be part of the Symposium for Well-Being and Agency at Caltech on August 30-31. Registration is free. This symposium will discuss how we can contribute to democratic deliberation and policy choices that expand possibilities for well-being and agency. wellbeing-agency.jp/symposium2026/

wellbeing-agency.jp

The 2nd International Symposium for Well-being and Agency

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Krajbich Lab @krajbichlab.bsky.social · 02/06/2026

To be clear, no data analysis is necessary at all. Simply verifying that there is any gaze data from a participant is enough to verify that there was a human there.

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Krajbich Lab @krajbichlab.bsky.social · 02/06/2026

For screening out bots it can be as simple as checking that gaze recordings are consistently present. It's also easy to check that those gaze coordinates are on the screen, in certain areas of interest, etc.

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Krajbich Lab @krajbichlab.bsky.social · 02/06/2026

This works when participants have laptops or webcams. Many do for Zoom, etc. In that case there is no cost and just a couple minutes for calibration. This is preferable to video capture because it respects participant privacy. No images leave the local machine, just gaze coordinates.

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Krajbich Lab @krajbichlab.bsky.social · 27/05/2026

Submit (by June 1) and register (by June 8) at the conference website: sites.google.com/view/esa2026... In addition to a fantastic program, the conference location is right on the beach, and very close to spots where you can swim, surf, SUP, beach volleyball... Join us for a great time!

sites.google.com

ESA 2026 World Meetings

The 2026 ESA World Meetings will be held at the Marriott Resort Hotel in Marina del Rey, California, just half a mile from Venice Beach and an easy 15-minute car ride from Los Angeles International Ai...

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Krajbich Lab @krajbichlab.bsky.social · 27/05/2026

Time's running out to sign up for the Economic Science Association world meeting July 15-17 in beautiful Marina Del Rey (Los Angeles). The day before (July 14), we're hosting a "choice process" symposium with many amazing speakers. Best part - it's free with ESA registration.

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Krajbich Lab @krajbichlab.bsky.social · 22/05/2026

Just like with cheating, we suspect it will only get worse as the cost of doing so goes down, i.e. as these tools become more prevalent and more built into our other tools like web browsers. AI use in online experiments vary from 6% (Prolific) to 41% (MTurk). Details here: osf.io/preprints/ps...

osf.io

OSF

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Krajbich Lab @krajbichlab.bsky.social · 19/05/2026

Our compendium provides open-source integrations for the main platforms used in online behavioral research: Qualtrics for surveys, jsPsych and PsychoPy for cognitive experiments, and oTree for experimental economics. (4/7)

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Krajbich Lab @krajbichlab.bsky.social · 19/05/2026

Compendium: kiante-fernandez.github.io/webcam-eyetr... Preprint: osf.io/preprints/ps... We welcome feedback, especially from researchers concerned about AI agents in their data or anyone who tries the tools out. (7/7)

kiante-fernandez.github.io

Webcam Eye-Tracking Compendium

A directory of webcam-based eye-tracking software

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Krajbich Lab @krajbichlab.bsky.social · 19/05/2026

We also give practical guidance: hypothesize the gaze pattern an engaged participant would produce, norm it in the lab with verified humans, and decide in advance which patterns warrant exclusion. (6/7)

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Krajbich Lab @krajbichlab.bsky.social · 19/05/2026

At a minimum, eye tracking confirms that eyeballs are pointed at the screen, which alone keeps AI agents from completing studies on their own. With a bit more work, researchers can verify that a human is genuinely attending to the task. (5/7)

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Krajbich Lab @krajbichlab.bsky.social · 19/05/2026

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Krajbich Lab @krajbichlab.bsky.social · 19/05/2026

In a new piece with @kiante.bsky.social @taroyang3302.bsky.social @stephsmithphd.bsky.social , we argue for a paradigm shift. Webcam eye tracking offers what we call proof by presence. Gaze is a physiological signal that AI agents do not possess. (3/7)

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Krajbich Lab @krajbichlab.bsky.social · 19/05/2026

Existing defenses like CAPTCHAs and attention checks can be bypassed. As AI progresses, behavioral signals will look increasingly human, so the arms race between agents and detection is not one researchers can expect to win. (2/7)

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Krajbich Lab @krajbichlab.bsky.social · 19/05/2026

Autonomous AI agents are now built into many browsers. A naive user can take an online survey with as little as the click of a button. For behavioral research, which depends heavily on online samples, this is a real problem. (1/7)

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Krajbich Lab @krajbichlab.bsky.social · 03/02/2026

Excited to be participating in the workshop on Decision Making and Information Processing in Complex Settings in Lucca (Italy) April 27-28. There's a great lineup, with Giorgio Coricelli, Susann Fiedler, Andreas Glöckner, and Carlos Alós-Ferrer. Join us! decisionmaking.imtlucca.it

decisionmaking.imtlucca.it

Decision Making and Information Processing in Complex Settings

This two-day workshop brings together leading scholars working on decision-making in interactive and complex environments, with a focus on theoretical, experimental, and methodological approaches. To...

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Krajbich Lab @krajbichlab.bsky.social · 05/01/2026

We are so thrilled to welcome new colleagues Erie Boorman, @maureenritchey.bsky.social, and @ajaysatpute.bsky.social to UCLA. What an exciting day for UCLA Psychology! #neuroeconomics

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Krajbich Lab @krajbichlab.bsky.social · 21/11/2025

We also worked with wonderful collaborators on this project from The Ohio State University's School of Communication - Prof. Jason Coronel, and @elizaeriggs.bsky.social, now at the College of Charleston.

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Krajbich Lab @krajbichlab.bsky.social · 21/11/2025

Building on past attentional drift diffusion model (aDDM) work, we find that gaze has a stronger effect on choice for more important issues. This work shows how ballot design can influence political outcomes, by drawing attention to certain options. Project led by former student Taro Yang at UPenn.

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Krajbich Lab @krajbichlab.bsky.social · 21/11/2025

New paper in @cognitionjournal.bsky.social, where we show how attention impacts political choices. With an eye-tracking study, we find that people's votes aren't set in stone - they take longer to vote on divisive issues and can be swayed by gaze manipulations. authors.elsevier.com/sd/article/S...

authors.elsevier.com

ScienceDirect.com | Science, health and medical journals, full text articles and books.

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Krajbich Lab @krajbichlab.bsky.social · 14/10/2025

Belated congratulations to our former labmate Miruna Cotet for her Paper of the Year Award from the Society for Neuroeconomics. The award celebrates her work on the cognitive dynamics of bargaining, using eBay data, published in PNAS. pnas.org/doi/abs/10.1... #SNE2025

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Reposted by Krajbich Lab

Kianté @kiante.bsky.social · 06/10/2025

That’s a wrap for #SNE2025! Grateful for the chance to share some of our recent work as a spotlight this year and thankful to the society for supporting me as one of this year’s travel award winners along with @gloriawfeng.bsky.social, @jaehyungwoo.bsky.social, Laura Globig, and Minho Hwang)!

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Krajbich Lab @krajbichlab.bsky.social · 21/05/2025

For anyone on the west side of Los Angeles, I'll be at the Rosegold Saloon tomorrow evening, presenting at the Pint of Science event there. I'll be giving an overview of my lab's research, pub style. We'll be wrestling with the age-old question - ale or lager? pintofscience.us/event/from-b...

pintofscience.us

From Bacteria to Neurons: How our brain makes decisions and develops

How does the brain process decision making? How do bacteria in your gut talk to your brain? Dr. Kraibich will discuss how our memory affects the way we mak…

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Krajbich Lab @krajbichlab.bsky.social · 20/05/2025

Excited to share a new Trends in Cognitive Sciences paper that I had the pleasure to be a part of. This is an interdisciplinary perspective on the dynamics of cognitive costs, namely when these costs occur and how they impact our decisions. #neuroeconomics www.sciencedirect.com/science/arti...

sciencedirect.com

A timeline of cognitive costs in decision-making

Recent research from economics, psychology, cognitive science, computer science, and marketing is increasingly interested in the idea that people face…

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Reposted by Krajbich Lab

Uma Karmarkar @umakarma.bsky.social · 11/05/2025

The West Coast Neuroeconomics Mini-Symposium hosted by @radyschool.bsky.social just wrapped on Saturday, and it was a genuinely fantastic (always too brief) few days of science. rady.ucsd.edu/2025-west-co...

rady.ucsd.edu

West Coast Neuroeconomics Mini-Symposium

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Krajbich Lab @krajbichlab.bsky.social · 22/04/2025

We also find that people look less at the Buy option when there are explicit outside options. Overall, we identify two different attentional mechanisms by which the framing of opportunity costs (i.e., the outside options) impacts people's willingness to make purchases. 3/n

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Krajbich Lab @krajbichlab.bsky.social · 22/04/2025

Across surpluses, people consistently purchase less with explicit outside options. Using a variant of the attentional DDM, we estimated separate attention discounts on the Buy and Don't Buy options. We find more discounting of the Buy option with explicit vs implicit costs. 2/n

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Krajbich Lab @krajbichlab.bsky.social · 22/04/2025

New article on the role of attention in opportunity-cost neglect, with the fabulous Steph Smith and @spillersas.bsky.social. Outside options that are explicit (Keep Money) vs implicit (Don't Buy), attract more attention, both gaze and gaze effect on choice. 1/n authors.elsevier.com/c/1kycc_Ebvv...

authors.elsevier.com

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Krajbich Lab @krajbichlab.bsky.social · 02/04/2025

What was really striking was the similarity of the temporal weighting function between the perceptual and economic tasks, both in the aggregate and across subjects. We estimated these weighting functions by having subjects report averages in real time using a joystick in the MRI.

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Krajbich Lab @krajbichlab.bsky.social · 02/04/2025

The paper was led by former student Minhee Yoo. She found that, in addition to the cuneus in both tasks, the left dlPFC tracked the average evidence in favor of an option, in the economic task. People with a stronger primacy bias had higher activity in cognitive control regions (dlPFC, IPS).

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Krajbich Lab @krajbichlab.bsky.social · 27/02/2025

One puzzle that emerged is that buyers do not respond optimally to slow rejections, which should signal that a slightly higher offer will likely suffice. Instead buyers are less likely to make a followup offer in such cases. This work was led by former student Miruna Cotet. 3/3

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Krajbich Lab @krajbichlab.bsky.social · 27/02/2025

We analyzed millions of eBay bargaining threads and ran a field experiment with thousands of our own offers. We showed that the drift-diffusion model can account for these decisions, extending the scope of these models from seconds to hours and days. www.pnas.org/doi/10.1073/... 2/3

pnas.org

PNAS

Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS) - an authoritative source of high-impact, original research that broadly spans...

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Krajbich Lab @krajbichlab.bsky.social · 27/02/2025

Thrilled to share our new paper in PNAS on bargaining in the "wild" (eBay). We find that bargainers reveal private information by taking hours longer to reject good offers and accept bad offers. We can predict bargaining outcomes from response times. newsroom.ucla.edu/releases/res... 1/3

newsroom.ucla.edu

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