Creating a ‘science of us’ has been a contentious effort

Figuring out how people think and feel is one of science’s great challenges. In the last 100 years, we’ve seen the rise of psychology as an established field of study — a rise that has been marked by warring schools of thought and, at times, horrifying experiments. Big questions remain unanswered, but we’ve come a long way from Sigmund Freud and the Oedipus complex.