The central thesis for Kahneman’s life’s work, spanning over forty years of research of practitioners of fields too numerous to list, is a kind of mental dualism. Our minds have two distinct systems, which Kahneman calls System 1 and System 2.
The styleguide is a resource for designers, product managers, and developers, providing a common language around Yelp’s UI patterns. We use it to maintain modular front-end code and visual consistency across the web app.
There is a lot of psychology in colour, and while I don't claim to be an expert, every now and then I come across something that seems to be rather counterintuitive.
I suppose there are some cultural influences on colour as well, and people need to take these sorts of things into account when designing sites, but there also seem to be some ideas that cross over cultural lines.
“A wireframe is fundamentally a tool for collaboration. For UX designers who rely solely on creating wireframes because they are unable to apply the appropriate methods for stimulating alignment and collaboration, wireframes can be a crutch.”—Nate Davis