This book was read once and then placed on the bookshelf. There's a slight wrinkle at the top of the spine, so please check the third image before considering purchasing! Even for someone like me who isn't good at reading, the illustrations made it easy to read, and I was able to finish it in less than two days, making it easy to understand. This book clearly explains the knowledge of psychology and economics useful for business. - Title: Behavioral Economics - Author: Makoto Abe - Price: 1200 yen - ISBN: 9784051201212 - Contents: Knowledge of psychology and economics useful for business Thank you for looking.