Humans are often confronted with situations in which there are several possible behavioral responses. In some situations, one of the responses may be more practiced or "automatic" than the other responses. When the more practiced or automatic response is the correct one, it is relatively easy to execute the behavior. However, at other times, the less practiced or less automatic response may be the correct one. This situation can lead to competition between the different response possibilities, a situation typically referred to as "response conflict." Then, additional cerebral input may be needed to select the correct response and prevent the incorrect, but potentially more practiced, response from interrupting behavior.