There has been some discussion in the past few months about establishing a “language of critique” for user experience design. Jesse James Garrett may have started it with his closing plenary at the 2009 IA Summit in Memphis, it filled the IAI and IxDA mailing lists for a while and Erin Malone and James Melzer, among others, have blogged about it.
Here is my contribution (see the pdf), yes its a diagram. Its the first half of a two part diagram called “The Characteristics of User Experience”, this first part being the essential characteristics – the second part, coming soon, will be the secondary (or auxiliary, or periphery, I haven’t decided yet) characteristics.
Useful, Usable and Desirable have been touted for a long time as the hallmarks of a “good” user experience but they’re too generic and abstract. I think the five characteristics in this diagram are essential to any user experience being “good”. I’d love comments to stress test this!