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.
Logan Wright
Logan Wright Jr. (6 December 1933 – 18 December 1999) was an American pediatric psychologist and former president of the American Psychological Association (APA). He coined the term "pediatric psychology", co-founded the Society of Pediatric Psychology (SPP) and made numerous advances within the field. He was involved in the founding of the American Psychological Society (APS) in the mid-1980s when many psychological scientists split off from the APA.