If an individual believed that why people think and feel as they do is more important than what they think and how they think, that individual would be a proponent of the approach to psychology.

Functionalist

Explanation:

Functional psychology which is also known as functionalism which tends to refers to general notion of the psychological philosophy under which one considers the behavior and mental life in regards with the active adaptation to  an individual's environment. It also provides the general ground for  developing theories about psychology which are not yet readily testable through experiments (controlled).

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