Behavior

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For the Pet Shop Boys album of the same name see Behaviour

Behavior or behaviour (see spelling differences) refers to the actions or reactions of an object or organism, usually in relation to the environment. Behavior can be conscious or unconscious, overt or covert, and voluntary or involuntary. In animals, behavior is controlled by the endocrine system and the nervous system. The complexity of the behavior of an organism is related to the complexity of its nervous system. Generally, organisms with complex nervous systems have a greater capacity to learn new responses and thus adjust their behavior. Human behavior (and that of other organisms and mechanisms) can be common, unusual, acceptable, or unacceptable. Humans evaluate the acceptability of behavior using social norms and regulate behavior by means of social control. In sociology, behavior is considered as having no meaning, being not directed at other people and thus is the most basic human action. Behavior should not be mistaken with social behavior, which is more advanced action, as social behavior is behavior specifically directed at other people. Animal behavior is studied in comparative psychology, ethology, behavioral ecology and sociobiology.

Behavior as used in computer science is an anthropomorphic construct that assigns “life” to the activities carried out by a computer, computer application, or computer code in response to stimuli, such as user input. Also, "a behavior" is a reusable block of computer code or script that, when applied to an object (computer science), especially a graphical one, causes it to respond to user input in meaningful patterns or to operate independently, as if alive.