Final answer:
Behaviorists believe that most of your reactions are determined by your past experiences.
Step-by-step explanation:
True
In the field of psychology, behaviorists hold the belief that most of our reactions and behaviors are determined by our past experiences. They emphasize the idea that our personalities, behavior patterns, and responses are shaped by the reinforcements and consequences we have encountered throughout our lives. B.F. Skinner, a prominent behaviorist, argued that environment is solely responsible for all behavior, including enduring and consistent behavior patterns. This perspective suggests that our past experiences play a significant role in shaping our present behavior.