This book contains a compilation of 2 books by Hugo Münsterberg, a German-American psychologist. Book 1, Psychology and Industrial Efficiency, addresses many different topics that are very important in the field of industrial psychology. This book is split into three parts, each dedicated to an aspect of industrial psychology: finding the right employee for the job, procuring the best performance of the job, and obtaining the most effective end-result. Book 2, Psychology and Social Sanity, discusses how brain patterns can differ in social situations and how people think differently.