[单项选择]

In the same way that a child must be able to move his arms and legs before he can learn to walk, the child must physiologically be capable of producing and experiencing particular emotions before these emotions can be modified through learning. psychologists have found that there are two basic processes by which learning takes place. one kind of learning is called "classical conditioning". this occurs when one event or stimulus is consistently paired with, or followed by, a reward or punishment, it is through classical conditioning that a child learns to associate his mother’s face and voice with happiness and love, for he learns that this person provides food and comfort. negative emotions are learned in a similar fashion. The second kind of learning is called "operant conditioning." this occurs when an individual learns to do things that produce rewards in his environment and learns not to do things that produce punishments. for example, if a mother al
A. classical conditioning
B. operant conditioning
C. neither of them
D. some other sorts of conditioning

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