The research was conducted at the Marine Biological Laboratory (MBL) in Woods Hole.
The authors of the work used
Cuttlefish in a new study were able to waitbest reward and endured for up to 50–130 seconds. This is comparable to the results large-brained vertebrates such as chimpanzees, crows and parrots. The cuttlefish that waited the longest for food also showed better cognitive performance in learning tests.
In this experiment, cuttlefish were trainedassociate a visual signal with a food reward. Then the situation changed, and the reward became associated with a different signal. The cuttlefish that learned both of these associations the fastest were the ones that controlled themselves better than the others.
Finding this connection between self-control andlearning in a species outside the primate lineage is an example of convergent evolution, where completely different evolutionary processes lead to the same cognitive feature.
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