The "creative" game, an application of operant conditioning, was first developed with dolphins at Sea Life Park in Hawaii. This procedure for teaching animals to invent new behaviors was reported in a study funded by the Office of Naval Research. (See "The creative porpoise: Training for novel behavior," Karen Pryor, Richard Haig, and Joseph O'Reilly, Journal of the Experimental Analysis of Behavior 1969, 12:653-661.)
