Purposefully adding a delay to a process can actually increase its perceived value and instill a sense of trust, even when the process itself actually takes much less time.
Wizards of UX
This quote is hard to attribute to one particular person as it is a generally accepted piece of advice repeated by many. It is part of the collective wisdom of Wizards of UX!
Design Principles
IxD
Laws of UX
Timing
Irrespective of gender, people rate individuals in high face-ism images as being more intelligent, dominant, and ambitious than individuals in low face-ism images.
William Lidwell
The Director of Design at Stuff Creators Design in Houston and author of the best-selling design book, Universal Principles of Design.
Design Principles
Perception
Psychology
That a user should not be kept waiting unnecessarily is an obvious and humane design principle. It is also humane not to hurry a user; the more general principle is: Users should set the pace of an interaction.
Jef Raskin
An American human–computer interface expert best known for conceiving and starting the Macintosh project at Apple in the late 1970s.
Design Principles
UX Design
A product is bought to be used. It has to satisfy certain criteria, not only functional, but also psychological and aesthetic. Good design emphasizes the usefulness of a product whilst disregarding anything that could possibly detract from it.
Dieter Rams
A German industrial designer closely associated with functionalist school of industrial design.