The Banana Experiment — What You Need To Know
A group of scientists placed five monkeys in a cage, and in the middle, a ladder with bananas on top. Every time a monkey went up the ladder, the scientists soaked the rest of the monkeys with cold water. After a while….
The experiments of Harry Harlow and his associates at the Primate Laboratory of the University of Wisconsin are described in the textbook Principles of General Psychology (1980 John Wiley and Sons)