Aleksei Leontiev's life was closely linked to the
Lomonosov Moscow State University (MGU). In 1921, he began his studies at the historical-philological faculty of the university. The historical-philological faculty, at the time, included a Department of Philosophy at which
Georgy Chelpanov was teaching psychology, and Leontiev studied psychology with him. In 1924, Leontiev graduated from what became the Faculty of Social Sciences. Leontiev worked with
Lev Vygotsky and
Alexander Luria from 1924 to 1930, collaborating on the development of Marxist psychology as a response to behaviorism and the focus on the stimulus-response mechanism as an explanation for human behavior. Leontiev left Vygotsky's group in
Moscow in 1931, to take up a position in
Kharkiv. He continued to work with Vygotsky for some time but, eventually, there was a split, although they continued to communicate with one another on scientific matters (van der Veer and Valsiner, 1991). Leontiev returned to Moscow in 1934. Later, he became the Head of the Psychology Department at the Faculty of Philosophy of
Moscow State University. In 1966, Leontiev became the first ever Dean of the newly established
Faculty of Psychology at the Moscow State University, where he worked until his death in 1979. == Scientific work ==