This attention includes testing which is conducted during each stage of design and development from the envisioned requirements, through pre-production models to post production.
[4] UCD applies cognitive science principles to create intuitive, efficient products by understanding users' mental processes, behaviors, and needs.
[2][3] The term user-centered design (UCD) was coined by Rob Kling in 1977[5] and later adopted in Donald A. Norman's research laboratory at the University of California, San Diego.
The main highlights of these are: In a later book, Emotional Design,[7]: p.5 onwards Norman returns to some of his earlier ideas to elaborate what he had come to find as overly reductive.
In most cases, personas are synthesized from a series of ethnographic interviews with real people, then captured in one- or two-page descriptions that include behavior patterns, goals, skills, attitudes, and environment, and possibly fictional personal details to give it more character.