KrajbichLab Profile
KrajbichLab

@KrajbichLab

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Research in our lab seeks to understand how people, using their brains, make value-based decisions.

Los Angeles, CA
Joined October 2018
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@KrajbichLab
KrajbichLab
2 months
For anyone on the west side of Los Angeles, I'll be at the Rosegold Saloon tomorrow night, presenting at their Pint of Science event. 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?
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@KrajbichLab
KrajbichLab
2 months
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
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@KrajbichLab
KrajbichLab
2 months
RT @kenwaylouie: Not all noise is the same!. Excited to be a part of this fantastic new work from @BoShenNeuro using modeling and choice ex….
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@KrajbichLab
KrajbichLab
3 months
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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@KrajbichLab
KrajbichLab
3 months
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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@KrajbichLab
KrajbichLab
3 months
New article on the role of attention in opportunity-cost neglect, with the fabulous @stephsmithphd and Stephen Spiller. Outside options that are explicit (Keep Money) vs implicit (Don't Buy), attract more attention, both gaze and gaze effect on choice. 1/n
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@KrajbichLab
KrajbichLab
3 months
RT @arkadykonovalov: PhD position - UK applicants only this time 🚨. Apply by May 19 for a PhD with James Goulding, Evgeniya Lukinova (Notti….
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@KrajbichLab
KrajbichLab
3 months
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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@KrajbichLab
KrajbichLab
3 months
The paper was led by former student Minhee Yoo. She found that, in addition to the cuneus, 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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@KrajbichLab
KrajbichLab
3 months
🚨New paper in CABN with Brandon Turner's lab🚨 .We use an averaging diffusion model and fMRI to study how the brain estimates average evidence in perceptual and economic tasks. We find recency and primacy effects that are highly consistent across tasks.
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@KrajbichLab
KrajbichLab
4 months
RT @CommsPsychol: In a one-shot prisoner’s dilemma game, manipulating the location of payout information on computer screens changed partic….
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@KrajbichLab
KrajbichLab
5 months
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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@KrajbichLab
KrajbichLab
5 months
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. 2/3
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@KrajbichLab
KrajbichLab
5 months
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. 1/3
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@KrajbichLab
KrajbichLab
5 months
RT @arkadykonovalov: After a very successful experience last year, we are excited to announce . 🚨 COMPUTATIONAL SOCIAL COGNITION SUMMER SCH….
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@KrajbichLab
KrajbichLab
5 months
RT @arkadykonovalov: 🚨 Funded PhD alert!. Apply by Feb 24th for a PhD with James Goulding, Evgeniya Lukinova (Nottingham) and myself (Birmi….
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@KrajbichLab
KrajbichLab
5 months
RT @JC_Dreher: Postdoc position in computational social science. Applications are invited to study the interactions between humans and AI t….
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@KrajbichLab
KrajbichLab
6 months
Congratulations to former lab member @taroyang3302 who just started a postdoc position in UPenn's MindCORE fellowship program! We're excited to see what new research she produces with new colleagues @MichaelLouisPl1 , Joe Kable, Sudeep Bhatia, and others. We'll miss you Taro!.
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@KrajbichLab
KrajbichLab
6 months
At November's SJDM meeting we had a workshop on webcam based eye-tracking, mouse-tracking, and text analysis with LLMs, with @taroyang3302 @AdaAka18 @NitishaDesai . In case you missed it, here's a link to the hands-on tutorials we put together:.
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@KrajbichLab
KrajbichLab
7 months
RT @arkadykonovalov: 🚨 PhD opportunity! 🚨. I will support one application for the MIBTP doctoral training program this year, joint with @th….
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