Wilhelm Wundt's student, Edward Titchener, developed an approach in which the mind is broken into the smallest elements of mental experience. What was this called?

Structuralism

Explanation:

Structuralism: In psychology, the term structuralism was proposed by Wilhelm Wundt and later on expanded by his student named Edward Bradford Titchener. The structuralism is considered as the theory of consciousness and to experience this phenomenon, psychologists constructed self-reports, introspection, views, emotions, sensations, and feelings.

Structuralism is considered as the school of thought that identifies different components or structures of a human mind (key element). Structuralists believed that to learn or know about the brain and related functions the only way is to break the mind into different parts consisting of basic elements.

In the question above, the given statement represents the structuralism.