Week 33 · Human Interaction Psychology
End of experience
Where this idea goes next
- Affordance Theory A trigger a user cannot see is not a trigger yet — Norman's affordance theory is the discoverability half of Saffer's own Trigger section, worked out twenty years earlier.
- Hick's Law A trigger only exists once a decision has already been made to use it; Hick's Law prices that decision, and this piece prices only what happens after it fires.
- Gamification Loops & Modes is where a reinforcement schedule enters an interface on purpose — gamification is that same lever, pulled for retention rather than for telling the user the tap landed.