By the early 20th century, psychology was still searching for its identity. Then came John B. Watson, a man who declared war on introspection. “Psychology,” he said, “must discard all reference to consciousness.” With that, he founded behaviorism — the belief that the only thing worth studying was what could be seen, measured, and controlled.

Watson’s experiments were bold and often controversial. He conditioned fear in a child known as Little Albert, showing how emotions could be trained like reflexes. He viewed humans not as mysteries of the soul, but as organisms shaped by their environment — programmable, predictable, and malleable.

This episode examines the seductive simplicity and cold precision of behaviorism, and how Watson’s ideas reshaped education, advertising, and even parenting.  ...