The field of psychology that focuses on the integration of science and theory to prevent and treat psychological disorders is psychology.

Answer is clinical psychology.

Explanation:

Clinical psychology involves the treatment of mental illness and behavioral difficulties. The psychologist will help the client in identifying emotional or mental problems. This is done through interviews, where he diagnose existing or potential disorders. The psychologist made use of talk therapy only for treatment .

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answer; which categories of people are most at risk of becoming a criminals;