His first position involved teaching
French phonetics and
phonemics at the
University of California, Los Angeles. After leaving UCLA, Pimsleur went on to faculty positions at the
Ohio State University, where he taught French and foreign language education. At the time, the foreign language education program at OSU was the major doctoral program in that field in the U.S. While at Ohio State he created and directed the Listening Center, one of the largest language laboratories in the United States. The center was developed in conjunction with
Ohio Bell Telephone and allowed self-paced language study using a series of automated tapes and prompts that were delivered over the telephone. Later, Pimsleur was a professor of education and Romance languages at The
State University of New York at Albany, where he held dual professorships in education and French. He was a
Fulbright lecturer at the
Ruprecht Karls University of Heidelberg in 1968 and 1969 and a founding member of the
American Council on the Teaching of Foreign Languages (ACTFL). He did research on the psychology of language learning and in 1969 was section head of psychology of second languages learning at the International Congress of Applied Linguistics. His research focused on understanding the
language acquisition process, especially the learning process of children, who speak a language without knowing its formal structure. The term "organic learning" was applied to that phenomenon. For this, he studied the learning process of groups made of children, adults, and
multilingual adults. The result of this research was the
Pimsleur Language Programs. His many books and articles affected theories of language learning and teaching. In the period from 1958 to 1966, Pimsleur reviewed previously published studies regarding linguistic and psychological factors involved in language learning. He also conducted several studies with support from Ohio State or from the US Office of Education. This led to the publication in 1963 of a coauthored monograph,
Underachievement in Foreign Language Learning, which was published in the
International Review of Applied Linguistics. Through this research, he identified three factors that could be used to calculate
language learning aptitude: verbal intelligence, auditory ability, and motivation. Pimsleur was the primary author of the
Pimsleur Language Aptitude Battery (PLAB) based on these three factors to assess language aptitude. He concluded that low auditory ability was a major factor in underachievement. Pimsleur was one of the first foreign language educators to show an interest in students who have difficulty in learning a foreign language while doing well in other subjects. Today, the PLAB is used to determine foreign language-learning aptitude, or even a foreign language-learning disability, among secondary-school students. == Death ==