Stanislavski's system
Adler was the only member of the Group Theatre to study with Konstantin Stanislavski. She was a prominent member of the Group Theatre, but differences with Lee Strasberg over Stanislavski's system (later developed by Strasberg into method acting) made her leave the group. She once said: "Drawing on the emotions I experienced — for example, when my mother died — to create a role is sick and schizophrenic. If that is acting, I don't want to do it."