David Levari

@davidlevari.bsky.social

1121 Followers 1309 Following

Assistant Professor of Cognitive & Psychological Sciences + Entrepreneurship @ Brown University https://davidlevari.com/

Freeze frame of a US soccer player stepping on a Bosnian player's leg from a slow-motion replay
Left panel: diagram of streak- and percentage-based messages to encourage donation, using cartoon figures (A decides whether to donate, and B/C/D are potential future donors who can either be part of a streak with three past donors or of part of a large percentage (80%). Upper right panel: A bar graph showing three conditions on the x-axis (Control/High Percentage/Short streak) and the donation rate (%) on the y-axis. The high percentage bar (center) is not significantly higher than the control bar, but the short streak bar is significantly higher than both other bars. Lower right panel: similar pattern and plot, but for three conditions labeled Control, No Streak, and Streak, respectively.
Screenshot of the title and abstract of the article "Levari, D. E., & Norton, M. I. (2026). Collective streaks motivate prosocial behavior. Journal of Experimental Social Psychology, 126, 104941."
Screenshot of news headline: "Jesse Eisenberg Reveals Plan To Donate His Kidney To A Stranger 'In Six Weeks,' But Doesn't 'Know Why'"
A screenshot from some sort of mobile credit card ad which describes a restaurant deal for a credit card called the "Visa Infinite Privilege card."
A photo of a brown mug with the Brown University logo on it, filled with some sort of (brown) liquid.
A horizontal line with arrows on both ends. The left side is labeled "less plausible" and the right side is labeled "more plausible." Above the line, there are three examples of headlines. The left-most one says "The U.S. will sell uninhabited parts of Alaska to Russia." The center one says "New York State is banning youth football due to concussions." The right-mose one says "Welch's Fruit Snacks to release new flavor: Kiwi."
Screenshot of the title, authors, and abstract for the paper, link available here: https://osf.io/preprints/psyarxiv/cz7vy
Photograph of two packages of Kraft American cheese slices. The package on the left is labeled "extra thin" slices, and the one on the right is labeled "ultra thick."