When given the chance to peck on symbols that carried different probabilities of getting food, carrion crows learned to choose the one with a higher probability of reward
Crows can make decisions according to the likelihood of getting a reward – a cognitive feat known to mathematicians as statistical inference, and rarely found outside of primates.at the University of Tubingen in Germany.
Her team trained two carrion crows to peck at nine, different-coloured symbols to receive a reward: a small food pellet or worms. Each symbol was associated with a different probability of receiving …
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