The Thomas theorem, a fundamental principle of sociology, posits that if individuals define situations as real, they are real in their consequences. This microsociological concept, developed by William Isaac Thomas, provides a core theoretical framework for the field of symbolic interactionism, influencing generations of researchers who investigate how subjective interpretations shape human behavior and societal outcomes.
Academic Foundations and Early Career
Born in Russell County in 1863, William Isaac Thomas pursued an extensive education in literature and classics. After receiving his Bachelor of Arts from the University of Tennessee in 1884, he taught courses in Greek, Latin, French, German, and Natural history. He later expanded his academic horizons at the Humboldt-Universität zu Berlin and universities in Göttingen. By 1889, he returned to the United States to serve as a professor at Oberlin College, where he taught English and sociology until 1895.
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In 1895, Thomas moved to the University of Chicago, where he finished his Ph.D. thesis, On a Difference in the Metabolism of the Sexes, in 1896. Over the next two decades, he rose through the ranks to become a professor while co-editing the American Journal of Sociology from 1895 to 1917. During this time, he published Sex and Society in 1907 and began collaborating with Florian Znaniecki on their seminal work, The Polish Peasant in Europe and America.
Professional Transition and Later Research
Following his departure from the University of Chicago in 1918, Thomas relocated to New York City. From 1923 to 1928, he lectured at The New School for Social Research. In 1923, he released The Unadjusted Girl, followed by the 1928 work The Child in America, co-authored with Dorothy Swaine Thomas. He served as the president of the American Sociological Association in 1927 and held a visiting lectureship at Harvard University between 1936 and 1937.
Fast facts
- Born: 1863, Russell County
- Died: 1947, Berkeley
- Citizenship: United States
- Notable works: Thomas theorem
- Positions held: President of the American Sociological Association (1927)
- Alma mater: University of Tennessee; Humboldt-Universität zu Berlin
- Fields of work: Sociology; social psychology; positivism
- Academic degree: Doctor of Philosophy
Questions readers ask
What is the Thomas theorem?
It is a sociological principle stating that if men define situations as real, they are real in their consequences.
Which universities employed William Isaac Thomas?
He worked at the University of Chicago, The New School, Oberlin College, and Harvard University.
Achievements
- Notable work: Thomas theorem
- Held posts at University of Chicago, Oberlin College and The New School
- Fields: sociology, social psychology and positivism
