Psychology is the science that studies human behavior and mental processes, both conscious and unconscious. It aims to describe, explain, predict, and alter human experience patterns. Applying psychological principles in technology can lead to variable rewards and delight by leveraging things like curiosity, framing effects, and heuristics. To get started learning about psychology in user experience design, one could find patterns in user behavior, get creative in solution design, find relevant papers on the topic, and read recommended books on experience design, seductive interaction design, behavioral economics, and more.