Humanistic theories of personality have helped fuel research into character strengths, happiness, and thriving. In other words, the humanistic approach has aided in the growth of a. Functional analysis.
b. Positive psychology
c. Reciprocal determinism.
d. Conditions of worth.

b. Positive psychology

Explanation:

Humanistic theories of personality have helped fuel research into character strengths, happiness, and thriving. In other words, the humanistic approach has aided in the growth of positive psychology.

A positive psychology can be defined as a broad range of science that typically deals with only the positive aspects of an individual's life. Thus, positive psychology is mainly centered around being happy, joyous, flourishing, thriving, character strength, well-being etc.

Hence, positive psychology reinforces positivity rather than negativity such as bitterness, sadness etc.

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