Support OneGreenPlanet Being publicly-funded gives us a greater chance to continue providing you with high quality content. Please support us! Support Us In a study that challenges perception about animal cognition and sentience, a cuttlefish has successfully passed a cognitive test originally designed for human children. The “marshmallow test”, coined by the Stanford Marshmallow Experiment, was created to test children’s understanding of delayed gratification. A child would be presented with a marshmallow and the option to eat the treat immediately or wait fifteen minutes to earn two marshmallows; the ability to practice self-restraint in order to earn a greater reward is considered a sign of higher cognitive function. While corvids, primates, and cuttlefish have all passed modified versions of the marshmallow test, a new study has ruled out potential skepticism and made it incredibly clear that these strange animals are highly capable of comprehending the idea.