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.
International Association for Analytical Psychology
The International Association for Analytical Psychology (IAAP) is the international accrediting and regulatory body for all Jungian societies and groups of analytical psychology practitioners, trainees and affiliates. Analytical psychology was founded by Carl Gustav Jung.