hendel-conflicting-next-letter-to-upper

Summary

In the conflicting-tasks experiment, switching from the next-letter task to the to-upper task shows a clear drop in performance: people hit 92 percent accuracy on straightforward trials but only 77 percent when the two tasks pull in different directions. That 15-point gap is the core signal that this particular transition carries a measurable interference cost, which the system can use as a baseline for comparing other transition pairs.