Like all psychological theories,psychological treatments need to be validated by using

A) trial and error.
B) empirical research.
C) "fringe" therapies.
D) faith and tradition.

Empirical Research

A way of gaining knowledge by means of direct and indirect observation or experience.

Psychological Theories

Concepts and principles developed to explain and predict behavior and mental processes.

Trial and Error

A problem-solving method involving repeated, varied attempts which are continued until success, or until the practitioner stops trying.