Why do we believe in the views of a political party or leader? How can we better understand vaccine hesitancy or denial of climate change science? What drives extremist or conspiracist beliefs?This vital and timely new text provides a compelling survey of the science behind how people form beliefs and evaluate those of others, and why it is that beliefs are often so resistant to change in the face of conflicting evidence. Bringing together theories and empirical evidence from cognitive, developmental, and social psychology, Nancy S. Kim presents an engaging overview of the field and its implications for a wide range of beliefs - from moral, political, religious, and superstitious beliefs to beliefs about ourselves and our own potential. The intriguing studies discussed demonstrate how many psychological factors contribute to belief, including memory, reasoning, judgment, emotion, personality, social cognition, and cognitive development. With thoughtful questions and a range of cross-cultural case studies, this is an ideal overview for students of psychology and all readers interested in the psychology of belief.