Problem space
Initial, intermediate, and end state of a problem
Operators
Legal operation that can be used to solve a problem
Functional fixedness
Likeliness to see objects only as they function normally than how they could be used
Negative set/mental set
Predisposition to think of a problem in a certain way, leading to fixation on one strategy
Insight
Restructuring of the problem that results in the “aha!” experience
Incubation
Period of time during which attention is turned away from problem
Incubation may help
Relieve fatigue and frustration, relieve functional fixedness, help escape negative sets, and release from irrelevant thoughts