Human beings generally have an aversion to bitter and sour f…
Human beings generally have an aversion to bitter and sour foods. Some researchers suggest that this is because foods that are inedible or even poisonous are often bitter or sour. The tendency of human beings to find these potentially harmful foods repulsive is an example of __________.
Read DetailsA behavioral psychologist tries to train a bird to climb a t…
A behavioral psychologist tries to train a bird to climb a tree to get a reward of a piece of fruit. At first, the bird learns how to climb the tree with its legs and beak. After a while, it starts flapping its wings and hopping around before it starts to climb. Eventually, the bird flies up to the piece of fruit, even though that prevents it from getting the fruit. According to the Brelands’ analysis of biological constraints, the bird is demonstrating __________.
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