Experimental Psychologist Narziss Ach Expanded Introspective Psychology by

Experimental psychologist Narziss Ach expanded introspective psychology by

A) asking subjects to associate to stimulus words freely rather than in a highly specific manner.
B) asking subjects to associate numbers to letters rather than associating letters to numbers.
C) asking subjects to introspect about their early childhood memories.
D) performing directed-association studies that revealed the importance of determining tendencies or mental sets.