Before revision: The most famous example ( which led to the coining of the term by Abraham S. Luchins and Edith Hirsch Luchins ) is the Luchins water jar experiment, in which subjects were asked to solve a series of water jar problems.
After revision: The example which led to the coining of the term by Abraham S. Luchins and Edith Hirsch Luchins is the Luchins water jar experiment, in which subjects were asked to solve a series of water jar problems.