The Design of Everyday Things (Wikipedia)
An encyclopedia article on Donald Norman‘s 1988 book — the work that popularized “affordance” for design (already covered via Affordance) and the source of the seven-stages-of-action / Gulf of Execution / Gulf of Evaluation framework. Wikipedia articles are continuously edited, so year above reflects the access date (2026-06-25), not a fixed publication year.
License: CC BY-SA 4.0 — https://creativecommons.org/licenses/by-sa/4.0/
Key points
- Originally published 1988 as The Psychology of Everyday Things (POET/DOET); a new preface was added in 2002, and a revised, expanded edition followed in 2013 (the edition that added signifiers). Norman has said his academic peers preferred the original title, but he judged the new one better at communicating the book’s content and attracting readers.
- The book’s origin story: Norman, at an Italian conference, watched several people fail to thread a film projector despite trying one after another, prompting him to study why ordinary objects are so often hard to use.
- Affordances and signifiers: Norman borrowed “affordance” from James J. Gibson; the book’s worked example is doors that can be pushed or pulled, with signifiers (flat plates, small push-buttons, long rounded bars) communicating which. See Affordance for the full concept history — this book is the origin of Norman’s 1988 narrowing of the term.
- User-centered design: Norman popularized this term (used earlier in his 1986 book User-Centered System Design) to mean designing around user needs ahead of secondary concerns like aesthetics — operationalized as simplifying task structure, making things visible, getting mapping right, exploiting constraints, designing for error, explaining affordances, and the seven stages of action.
- Seven stages of action: four execution stages (forming the goal → forming the intention → specifying an action → executing it) and three evaluation stages (perceiving the world’s state → interpreting it → evaluating against intentions/goals) — see Seven Stages of Action for the full model.
- Gulf of execution and gulf of evaluation: the gulf of execution is “the gap between a user’s goal for action and the means to execute that goal”; the gulf of evaluation is “the difficulty of assessing the state of the system and how well the artifact supports the discovery and interpretation of that state,” following interface → perception → interpretation → evaluation. The article illustrates the gulf of execution with a VCR (videocassette recorder) example: a customer who wants to “record this show” expects one action, not the record/set-time/select-channel/confirm sequence the device actually requires. Both terms predate this book — first mentioned in Norman’s 1986 User Centered System Design: New Perspectives on Human-Computer Interaction — and the article’s own movie-projector anecdote is explicitly used to illustrate both: the long, unclear setup sequence as the gulf of execution, and not being able to tell whether the film was threaded correctly as the gulf of evaluation. See Gulfs of Execution and Evaluation for the full treatment, including the four design principles (visibility, a good conceptual model, good mappings, feedback) the book distills them down to.
- Reception: an early draft offended a group of industrial designers, prompting Norman to rewrite it more sympathetically toward the profession — the only reception detail the article gives.
- “See also” lists Action slip (see Usability Engineering for the slip/mistake distinction), Emotional Design (a different Norman book — now covered on its own terms via Emotional Design), Industrial design, Interaction design, and Principles of user interface design (see Interface Design Principles) — all bare pointers, not elaborated on in this article.