Kiri Kuroda
kirikuroda.bsky.social
Kiri Kuroda
@kirikuroda.bsky.social
Postdoc @arc-mpib.bsky.social, @mpib-berlin.bsky.social Interested in human social/group decision-making. Also working as a social media team at ARC. kirikuroda.com/en
I truly appreciate all the supports from the Center for Adaptive Rationality at the Max Planck Institute for Human Development (@arc-mpib.bsky.social & @mpib-berlin.bsky.social).

And great thanks to the co-authores, Alan Tump (@alantump.bsky.social) & Ralf Kurvers (@ralfkurvers.bsky.social)!
July 16, 2025 at 9:34 AM
6/ 💡Even subtle individual differences—like how fast you decide—shape how social decisions unfold.

⌛Our study suggests the importance of going beyond the paradigm of passively using social info and focusing on the timing and speed of judgement in group decision-making.

🔗 doi.org/10.1098/rspb...
Individual differences in speed–accuracy trade-off influence social decision-making in dyads | Proceedings of the Royal Society B: Biological Sciences
Speed–accuracy trade-offs are a fundamental aspect of decision-making, requiring individuals to balance collecting more information against making faster decisions. Although speed–accuracy trade-offs ...
doi.org
July 16, 2025 at 9:34 AM
5/ People adapted to this social situation.

💡🐢Slow people relied less on the fast ones.

💡🐇Fast people relied more on the slower ones and became a bit more cautious.

Our experiment and simulations show that pairs performed as well as individuals. These results suggest flexible use of social-info.
July 16, 2025 at 9:34 AM
4/ What did we find?

🐇Fast (but less accurate) people often decided first and set the tone.

🐢Slower (but more accurate) people followed.

Social accuracy depended on the faster person, not the better-informed one. So, did the pair's accuracy get worse ...?

👉But here's the twist:
July 16, 2025 at 9:34 AM
3/ 🧑‍💻To address this, we ran an online study, where people made perceptual judgments while seeing their partner's choice in real time and making use of it.

📈We used drift–diffusion models to capture how competent and cautious each person was and how much they relied on their partner's social info.
July 16, 2025 at 9:34 AM
2/ Decision-making often involves a speed–accuracy trade-off. This exists in many animal species, but we rarely ask:

👉 What happens when people with different decision-making styles work together and can use social information from others in real time?
July 16, 2025 at 9:34 AM