[citation needed] He established the International Society of Logopedics and Phoniatrics and was a co-founder, with Karl Cornelius Rothe, of the Vienna School for Speech-Disturbed Children.
He worked from 1905 to 1908 at the St. Anna Children's Hospital [de] of the University of Vienna and was a guest student at the Institute of Chemistry.
During World War I, he was chief physician of the head injuries and speech disorders department of the Vienna Garrison Hospital.
[citation needed] After the war, Fröschels worked until 1926 at the Ohrenklinik then led by Heinrich Neumann von Héthárs and was at the same time assistant for phonetics at the Physiological Institute.
[citation needed] After Austria's annexation by Germany in the Anschluss, Fröschels was forcibly suspended on account of his Jewish origin and lost his venia legendi (status as a lecturer).
[4][5] In 1939 he emigrated to the United States, where he found a position as a research professor of speech disorders at the Central Institute for the Deaf, led by Max Aaron Goldstein, at Washington University in St.
[9] He developed a therapy for stutterers, for whom he thought the typical spasms could be solved by chewing movements while speaking and at the same time stimulating the various muscles of the vocal tract.