Background
Trettien, Augustus William was born on September 3, 1867 in Appleton, Wisconsin, United States. Son of Frederick and Caroline (Slater) Trettien.
Trettien, Augustus William was born on September 3, 1867 in Appleton, Wisconsin, United States. Son of Frederick and Caroline (Slater) Trettien.
Graduated from State Normal School, Oshkosh, Wisconsin, 1894. Bachelor of Laws, University of Wisconsin, 1899. Doctor of Philosophy, Clark University, 1904.
Teacher district schools, 1888-1890. Principal schools, Appleton, 1894-1897. Professor education, State Normal School, Oshkosh, 1900-1903.
Director School of Observation, same, 1904-1907.
Professor philosophy and education, Carroll College, Waukesha, Wisconsin, February-September 1907. Professor psychology and education, University of South Dakot, 1907-1911.
Associate professor education and director Training School, University of Kansas, 1911-1914. Professor philosophy and education, Drury College, Springfield, Missouri, 1914-1915.
Professor psychology and director psychological clinic, Toledo University, 1915-1932, dean College of Education, 1916-1919.
Director Trettien Psychological Clinic Laboratory, since 1932. Lecturer on education, State University of Iowa, summer 1908, University of Missouri, summers 1910-1915. Lecturer on psychology, Kansas State Normal College, Emporia, Kansas, summer 1911.
Lecturer on psychology, University of Washington, summers 1913, 14.
Expert consulting psychologist in business and court relations and psychological and psychopathic problems.
Mason.
Married Mary East. Goodell, June 26, 1895. Children: Helen, Marion.