Psychology and user experience (UX) may be two different branches of knowledge, but they still have a lot in common. In fact, UX gets most of its knowledge from psychology because the latter defines what people perceive to be a good web design and how information should be presented online to maximize the chance of retention.
A great example of a psychological concept being used in UX is Miller’s Law. It was first described in the famous 1965 article “The magical number seven, plus or minus two: some limits on our capacity for processing information” and theorizes that people can hold up to seven objects in their working memory.
According to this rule, information should be organized in categories no larger than 9, but preferably 7. The rule can be applied to any aspect of life that involves performing a relatively complex task.
But how does a rule that was generated in 1965 relate to modern UX designs?