and chose to wait for the more desirable reward. However, Mischel's earlier studies showed there are many other situations in which children cannot be certain that they would receive the delayed outcome. In such situations, waiting for delayed rewards may not be an adaptive response. Watts, Duncan and Quan's 2018 conceptual replication yielded mostly statistically insignificant correlations with behavioral problems but a significant correlation with achievement tests at age 15. These effects were lower than in the original experiment and reduced further when controlling for early cognitive ability and behavior, family background, and home environment. A 2020 study at University of California showed that a reputation plays significant role in the experiment. In findings presented in the journal Proceedings of the Royal Society B in 2021, Marine Biological Laboratory, researchers described cuttlefish (Sepia officinalis) that were able to pass an adapted version of the marshmallow test. Cephalopods engage in "future-oriented foraging" and the nine-month-old cuttlefish in the experiments were able to tolerate delays of 50 to 130 seconds, comparable to the performances of chimpanzees and crows. Individuals that had better self-control also demonstrated greater cognition in learning tests. References External links 1972 in California 1972 in science Human subject research in psychiatry Human subject research in the United States Psychology experiments Stanford University Marshmallows