At the turn of the 20th century, a Russian physiologist made a discovery that would fundamentally change how we understand learning and behavior.

What began as research into digestion unexpectedly revealed that animals, and humans, could be trained to associate one stimulus with another.

The experiments involved bells, food, and a group of very famous dogs. Yet the implications reached far beyond the laboratory, influencing psychology, education, and even marketing.

Learn more about Ivan Pavlov and the surprising experiments that reshaped our understanding of the mind on this episode of Everything Everywhere Daily.