Answer: the cognitive behavioral approach.
Explanation:
The <em>cognitive behavioral approach</em> assumes that psychological disorders have irrational roots and changing those patterns of thinking/ those systems of belief can relieve a person's symptoms.
This approach focuses <u>on tackling the problem at hand, the current problem the person is facing and deconstructing with them why it's irrational </u>and what can be done about the present.
This is considered a short-term form of therapy and it's concentrated on bringing objectivity into the subjective reality of an individual.
<span>As a developmental researcher he divides participants in his experiments into two categories. One category is for the individuals who did not have the developmental intervention the other is for those who did. This is how he is able to test his hypotheses.</span>