Köhler's Insight Learning Experiments

Wolfgang Köhler studied problem-solving in chimpanzees at the Prussian Academy of Sciences' Anthropoid Station on Tenerife between 1913 and 1917, publishing the results as Intelligenzprüfungen an Menschenaffen (The Mentality of Apes) in 1917. He set the apes problems such as bananas hung out of reach or placed outside their cage, with materials like crates and sticks scattered nearby. His most cited subject, a chimpanzee named Sultan, stacked crates into a makeshift ladder and joined two short sticks into one long enough to rake in fruit. Köhler reported that solutions often followed a pause of apparent inactivity and then arrived as a single, complete, purposeful act rather than the gradual trial-and-error shaping Edward Thorndike had described in cats, and he named this pattern insight learning. The Tenerife studies became a founding demonstration that at least some animal problem-solving involves grasping the relations between elements of a situation, not only reinforced trial and error. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/