https://tanren-sensei.com/articles Writing on measurement, task design, and what cognitive training research does and does not support. en-GB https://tanren-sensei.com/articles/five-leaks https://tanren-sensei.com/articles/five-leaks Sat, 15 Aug 2026 00:00:00 GMT An automated audit measures how much each surface feature of a problem reveals about its answer, and fails the build past 0.05 bits. It has caught five real leaks — including one that printed the answer on the item. https://tanren-sensei.com/articles/one-dial-one-number https://tanren-sensei.com/articles/one-dial-one-number Sat, 15 Aug 2026 00:00:00 GMT Dual n-back gives you a single difficulty knob and a single metric. Matching a relation rather than an item changes what the task demands — a structure to update instead of a list to hold. https://tanren-sensei.com/articles/the-test-we-hope-doesnt-improve https://tanren-sensei.com/articles/the-test-we-hope-doesnt-improve Sat, 15 Aug 2026 00:00:00 GMT Tanren Sensei measures one ability it deliberately never trains. Without that comparison, an improvement has four explanations and no way to choose between them.