https://psyoptin.com/blog/ Near-daily notes on the science of manipulation and defense. Sources on every post. en-us https://psyoptin.com/blog/biderman-chart https://psyoptin.com/blog/biderman-chart Tue, 28 Jul 2026 15:00:00 GMT Albert Biderman studied how Chinese captors extracted false confessions from American POWs without torture equipment: isolation, monopolized perception, induced exhaustion, threats, occasional indulgences. Amnesty International reprinted his chart in 1973. Domestic-abuse workers have used it ever since, because it maps. https://psyoptin.com/blog/darvo https://psyoptin.com/blog/darvo Mon, 27 Jul 2026 15:00:00 GMT Jennifer Freyd named the pattern in 1997: Deny, Attack, Reverse Victim and Offender. Later experiments in her lab measured both how well it works on observers and how much of its power disappears when people learn its name first. https://psyoptin.com/blog/inoculation-15000 https://psyoptin.com/blog/inoculation-15000 Sun, 26 Jul 2026 15:00:00 GMT Roozenbeek and van der Linden's Bad News study (2019) had players run a disinformation campaign for 15 minutes, then measured how much less reliable manipulative content looked to them afterward. The results, the null replication in India, and what both mean for training. https://psyoptin.com/blog/name-the-tactic https://psyoptin.com/blog/name-the-tactic Sat, 25 Jul 2026 15:00:00 GMT Friestad and Wright's Persuasion Knowledge Model (1994) predicts that recognizing a sales tactic as a tactic changes how it lands. Later experiments measured the effect: once a target sees the move, the mover pays a penalty. What that means for training.