Steve Krug — timeless guide to web usability. Short, opinionated, practical. Every designer must read this.
Don Norman — foundational book on user-centered design covering affordances, signifiers, mental models and feedback loops.
Sheena Iyengar — explores the psychology of choice, why we make the decisions we do, and how too many options can paralyze us.
Daniel Kahneman — reveals the two systems that drive how we think. Essential for understanding user decision-making and cognitive bias.
Robert Cialdini — the definitive guide to the six principles of persuasion: reciprocity, commitment, social proof, authority, liking, and scarcity.
Elliot Aronson — a classic on social psychology and human behavior, exploring how we are shaped by the people around us.
Charles Duhigg — breaks down the science of habit formation and how habits can be changed in individuals, companies and societies.
Christopher Chabris & Daniel Simons — exposes the illusions of attention, memory and confidence that shape our everyday experiences.
Dan Ariely — explains the hidden forces that shape our decisions, revealing why we are not as rational as we think we are.
Other Resources
Leadership
Accessibility
NNG
IXDF
Research
UX Principles