iiinova — where your digital self keeps evolving

Marco K Wittmann

@mkwittmann.bsky.social

833 followers 376 following 62 posts

Associate Professor @ UCL. Experimental Psychologist. Interested in neural computations underlying social cognition. www.wittmann-lab.com

Posts Replies Media

Marco K Wittmann @mkwittmann.bsky.social · 13/03/2025

In a non-social control study, we were able to replicate the signatures of basis functions in both behaviour and dorsomedial prefrontal cortex , while eliminating socially specific signatures.

150

Marco K Wittmann @mkwittmann.bsky.social · 13/03/2025

When we weakened the group framing in a big behavioural study, we found that participants indeed performed worse in the task, despite allegedly simpler task space and more training. This suggests people use the groupings as a scaffold for solving the task.

140

Marco K Wittmann @mkwittmann.bsky.social · 13/03/2025

We found that participants represent combinatorial building blocks that aggregate over all four players in medial prefrontal cortex. This is useful because it prepares you for the specific decisions that are possible.

130

Marco K Wittmann @mkwittmann.bsky.social · 13/03/2025

Players were grouped into two teams – self and partner against two opponents. This gave participants important constraints on decisions that were possible and that were not possible within the experiment. Participants could solve the task by remembering combinations of players - aka basis functions

140

Marco K Wittmann @mkwittmann.bsky.social · 13/03/2025

We used a social group decision making task in which participants keep track of themselves and three other players – not knowing in advance who will be decision-relevant and who will not. This allowed us to see how people simplify information into a format that allows them to make good decisions.

140

Marco K Wittmann @mkwittmann.bsky.social · 20/11/2024

New commentary with @yongling.bsky.social out in TINS! We discuss the intriguing new results from Ma et al. suggesting that the brain maintains multiple predictions how other people might act in order to adaptively respond to others during social exchanges. www.sciencedirect.com/science/arti....

35014