The psychological perspective that emerged in the 1950s and stressed free will, self-actualization, and human nature as naturally positive and growth seeking was the perspective.

humanistic

Explanation:

Based on the information provided within the question it can be said that the psychological perspective that is being mentioned in this scenario is the humanistic perspective. This type of psychology deals with human individuals as a whole and focuses mostly on the various concepts of the self, such as free will, self-efficacy, and self-actualization.

is this even a question? ? : /