Motivation refers to a desire, need, or drive that contributes to and explains behavioral changes. In general, motivators provide some sort of incentive for completing a task. One definition of a motivator explains it as a force "acting either on or within a person to initiate behavior." In addition to biological motives, motivations can be either intrinsic (arising from internal factors) or extrinsic (arising from external factors). Incentive theory argues that people are primarily extrinsically motivated—meaning that most motivations stem from extrinsic sources. Extrinsic vs. Intrinsic.......