 Her doctoral thesis, "The psychology of mentally deficient children", studied 150 children in state institutions throughout New York; she brought her findings to the American Psychological Association, which marked the first time a woman had presented a thesis in the Association's New York center.After graduating, she served in the faculty of the Teacher's College, remaining there for the rest of her life despite actively receiving offers from other universities.Norsworthy served as instructor from 1904 to 1909, then her title changed to Adjunct Professor.