Mihaly Csikszentmihalyi's classic psychology book on the state of total absorption he calls 'flow,' widely cited in product and game design.
The original research behind a concept product and game designers reference constantly.
Designers building for engagement or focus, who want the real psychological source material.
A general psychology book, not design-specific, but hugely influential on the field.
Mihaly Csikszentmihalyi's classic book on the psychology of optimal experience.
