The concept for which Pavlov is famous is the `` conditioned reflex '' ( or in his own words the conditional reflex : the translation of условный рефлекс into English is debatable ) he developed jointly with his assistant Ivan Filippovitch Tolochinov in 1901 .
The concept for which Pavlov is famous is the `` conditioned reflex '' he developed with his assistant Ivan Tolochinov in 1901 .