But Perry and his colleagues think this is unlikely. The bees’ behavior didn’t speed up overall in response to the sugar solution; they were as slow as ever getting to the blue card that signaled unappealing water.
The fact that optimism — or something like it — exists in an invertebrate suggests that the feeling may have an evolutionary root, Mendl and Paul write. One function of “affective states,” they say, could be to inform animals’ decision-making strategies when balancing the need for food with the fear of predators.
Source: Bees are bold when they’re on a sugar buzz – The Washington Post
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