Why do we behave the way we do? Why do we eat what we eat? Why sleep on the right side of the bed even if there is no one on the other side? This can all be answered with the psychology of motivation; "The psychology of motivation is made up of different components that seem to answer all these questions" (Motivation and Emotion, 192). The first component to the psychology of motivation is motivation, itself. Motives are “hypothetical states that activate behavior, propelling us toward goals (192).” Motives are 'hypothetical states' because the come from your behavior and cannot be seen. Component two is your need. Everyone has needs. They are necessary to live in this world, you need them to live another day. We feel a need when we are being deprived. (192) For example, when you feel hungry or thirsty, your body needs the food or water because you haven’t given it what it needs to survive. Component three is your drive. A drive is when your body feels the need, it is stimulated. We are aroused to complete that need (192). This brings us to the final component which is our incentive. Incentives are things or people that can fulfil a need or a vain want (192). There are many things that can be incentives. With psychology come many theories. Not everyone has the same belief or idea. There are many theories of motivation such as the evolutionary perspective, drive reduction theory, stimulation, humanistic theory, and cognitive perspective. The evolutionary perspective states that animals were born with natural instincts to be the way they are to survive (192). The question at hand is whether or not humans have instincts. People like William James and William McDougall say that humans do have instincts to help them survive and behave in social environments (193). Clark Hull had a theory known as drive reduction theory which is when people participate in such things that lessen drives. (193) When stimulated, you desire to be motivated. Your motivation increases when you are stimulated. In the 1950’s at McGill University a study was conducted proving that stimulation is very important. Students were paid to sit and do nothing all day while tied to a chair and blindfolded. Most didn't last and the few that did had much trouble the following days concentrating. (193)