Dr. Sampson follows the structuralist school of thought. Her techniques would most likely include

Introspection, self-reports of sensations, views, feelings, emotions

Explanation:

Structuralism is considered to be the first school of thought in psychology. This theory of consciousness was developed by a German psychologist Wilhelm Wundt and his student Edward B. Titchener. The goal of those following the structuralist school of thought was to analyze the adult mind in terms of the simplest definable components and then discover how those components fit together.

The main technique structuralists used to discover different components of a person's consciousness was introspection - a process in which the person examines their own emotional and mental state. Titchener's introspection was a specific one. The subject would be presented with an object, such as a table, and have to describe its properties without actually naming it. Based on the results, he could draw further conclusions.