Haoran (Matt) Wan

Assistant Prof @DukeKunshan | Studying behavioral economics and decision making | PhD @WUSTL | @reed_college_ 21'; Baseball fan

[Haoran (Matt) Wan @matt_hr_wan]

We confirm this asymmetry is not a methodological artifact. Interestingly, the asymmetry does not occur because probability becomes more salient; rather, it results primarily from a significant decrease in delay discounting.

[Haoran (Matt) Wan @matt_hr_wan]

Thrilled to share our new research article just published in the JEAB. We explored "delay-probability asymmetry" to understand how individuals make decisions when outcomes are both delayed and probabilistic.
https://t.co/9AUTzmxV7X

[Haoran (Matt) Wan @matt_hr_wan]

@SS_strength @ScottPresler Yes, seriously. Shut up, listen to Rip, get under the bar, drink your milk, and do your fives.

[Haoran (Matt) Wan @matt_hr_wan]

In Study 2, we looked at probability discounting with another 592 participants. People generally become increasingly risk-averse from young adulthood until around age 60 and little change thereafter. However, this nonlinear trajectory is completely absent in high-income groups.

[Haoran (Matt) Wan @matt_hr_wan]

Our new paper is officially in press today at Frontiers in Psychology! Does getting older make you better at economic decision-making, or are you just wealthy? We investigated how age and income interact to shape your intertemporal and risky choices.

https://t.co/YWyltrhgnA

[Haoran (Matt) Wan @matt_hr_wan]

In Study 1, we tested delay discounting with 596 participants. Older adults were more likely to wait for delayed rewards. But this age-related increase was only observed in the lower-income groups.

[Haoran (Matt) Wan @matt_hr_wan]

@SS_strength Rip, as an Asian lifter with unusual short legs, I found narrowing my stance slightly keeps the barbell over my midfoot w/o weight shifting back to my heels. At what point does outlier in anthropometry dictate a departure from the standard stance and how does it change hip drive?

[Haoran (Matt) Wan @matt_hr_wan]

@SS_strength I will start to use the algorithm when it learns how to yell HIP DRIVE

[Haoran (Matt) Wan @matt_hr_wan]

We analyzed pigeons' token accumulation and food demand across five economic variables, e.g., labor productivity, price, and wages. While their savings (token accum) varied with labor, transaction costs, and wages, overall food consumption decreased as response costs increased.

[Haoran (Matt) Wan @matt_hr_wan]

New paper alert!
My first 2026 paper is out in JEAB. This work is based on my undergrad thesis. Long before I transitioned to human subjects for my PhD, I spent my time teaching pigeons the reality of saving, spending, and demand in a token economy.
https://t.co/9pszPD8mpu

[Haoran (Matt) Wan @matt_hr_wan]

I am thrilled to share that I have accepted a TT AP of Behavioral Science at @DukeKunshan starting Fall 2026. A huge thank you to my advisors and colleagues who have supported me during my PhD. Dissertation defense comes next...

[Haoran (Matt) Wan @matt_hr_wan]

New brief report in The Psych Record: We validated brief versions of the Monetary Choice and Delayed Losses Questionnaires.
By removing the medium amount questions, we reduced administration time by a third while preserving reliability and validity.
https://t.co/g05yskNebH

[Haoran (Matt) Wan @matt_hr_wan]

For fellow behavioral researchers: I've open-sourced the replication code for my published papers on discounting & operant demand that may be useful. https://t.co/OdZdsjsavw

I will be honest; I never would have bothered reorganizing and commenting all that code without AI.

[Haoran (Matt) Wan @matt_hr_wan]

Our results suggest that the quality of financial decisions involving delayed losses may improve as we age. This work challenges some existing theories and highlights the importance of considering both income and the magnitude of outcomes in aging research.

[Haoran (Matt) Wan @matt_hr_wan]

How do age and income shape our financial decisions, especially when it comes to delaying payments? Our new study on the discounting of delayed monetary losses is out now in The Journals of Gerontology, Series B. @geronsociety @OxfordJournals
https://t.co/lqNDILMWAW

[Haoran (Matt) Wan @matt_hr_wan]

A key finding: these age-related differences were most pronounced for larger, more impactful monetary amounts (e.g., $2,500 and $30,000) and were less apparent for small amounts. This may explain why some previous studies using smaller sums didn't find a significant age effect.

[Haoran (Matt) Wan @matt_hr_wan]

Last workout session of the summer at the KU gym (S:315, B:225, P:135, D:385) before heading to St. Louis for my dissertation. All training this summer is just a backup plan for the dissertation in case verbal arguments with my committee don't go well and we have to arm-wrestle.

[Haoran (Matt) Wan @matt_hr_wan]

@TestifySC @SS_strength Wondering if you offer a student discount, thanks!

[Haoran (Matt) Wan @matt_hr_wan]

@SS_strength Also by weighing 300 pounds.