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.
Frederic Bartlett
Sir Frederic Charles Bartlett FRS (20 October 1886 – 30 September 1969) was a British psychologist and the first professor of experimental psychology at the University of Cambridge. He was one of the forerunners of cognitive psychology as well as cultural psychology. Bartlett considered most of his own work on cognitive psychology to be a study in social psychology, but he was also interested in anthropology, moral science, philosophy, and sociology. Bartlett proudly referred to himself as "a Cambridge psychologist" because while he was at the University of Cambridge, settling for one type of psychology was not an option.