2026-10-06 · paper-digest
Yamamoto & Shiba: When both options share the same payment, people skip right over it — Fukai Reads
A peer-reviewed paper by Shohei Yamamoto (Rikkyo University) and Shotaro Shiba (Toyo University) in Judgment and Decision Making (13 May 2026). Three preregistered experiments (1,400 recruited) show that people largely ignore payments common to both options and decide on the shape of the differing part. With identical totals, re-presenting a choice as an investment or a loan changed patience; with real money, the loan framing's effect held.
