Motives are reasons people hold for initiating and performing voluntary behaviour. They indicate the meaning of human behaviour, and they may reveal a person's values. Motives often affect a person's perception, cognition, emotion and behaviour. A person who is highly motivated to gain social status, for example, may be observant of marks of social distinction, may think often about issues that pertain to wealth, may especially enjoy the feeling of self-importance, and may behave in ways associated with upper-class status . By defining motives as reasons, we do not imply that motives are primarily cognitive; any more than establishing a motive for crime in a court of law requires conscious premeditation. A person can have a reason to behave, and thus a motive, without necessarily being aware of it.
Aristotle (330BCE/1953) divided motives into ends versus means on the basis of the individual's purpose for performing the behaviour. Ends are indicated when a person engages in a behaviour for no apparent reason other than that is what the person desires to do. Examples include a child playing with a ball for physical exercise and a student reading a book out of curiosity. In each of these examples, the goal is desired for its own sake. In contrast, means are indicated when a person performs an act for its instrumental value. Examples include a professional athlete who plays football for a salary and a student who studies to improve a grade. In each of these examples, the goal