Gustav Fechner
Fechner, along with Wilhelm Wundt and Hermann von Helmholtz, is recognized as one of the founders of modern experimental psychology. His clearest contribution was the demonstration that because the mind was susceptible to measurement and mathematical treatment, psychology had the potential to become a quantified science. Theorists such as Immanuel Kant had long stated that this was impossible, and that therefore, a science of psychology was also impossible.
Freud and His Critics
Freud and His Critics is a 1993 book by the historian Paul Robinson about Sigmund Freud, the founder of psychoanalysis, and three authors critical of Freud: the psychologist Frank Sulloway, the former psychoanalyst Jeffrey Moussaieff Masson, and the philosopher Adolf Grünbaum. The book received positive reviews. Commentators credited Robinson with providing useful discussions of Sulloway, Masson, and Grünbaum, and some concluded that he discredited their arguments.