At a cocktail party you can expect the average person to eat how many hors d'oeurves in two and a half hours. 20, 10, 8, 15?

The correct answer would be, Response Generalization.

Explanation:

In simple words, Response Generalization is the spreading of the effects of a behavior which strengthen the contingency to other responses that are similar to the target response. Response Generalization is actually the possibility or occurrence of the similar response or behavior which occurs once.

So if John says some more words to greet people when he meets them, other than what he was taught by his teacher, his behavior change is the example of Response Generalization. For example, if he is taught to say Hello while greeting people, he can continue this behavior by saying Hi, good to see you, hey there, etc. This is response generalization.