Aleksei Leontiev

Aleksei Nikolayevich Leontiev[1] (Russian: Алексе́й Никола́евич Лео́нтьев, IPA: [lʲɪˈonʲtʲjɪf]; February 18, 1903 – January 21, 1979), was a Soviet Russian developmental psychologist and philosopher and a founder of activity theory.

  1. ^ Also transliterated Leont'ev and leontyev