A desire of an individual to give good performance for self-satisfaction is known as intrinsic motivation. Intrinsic motivation refers to behavior that is driven by internal rewards. In other words, the motivation to engage in a behavior arises from within the individual because it is naturally satisfying to you.
An economic value added method is specific type of method to calculate residual income. Residual income is excess income generated more than the minimum rate of return. Residual income is a measurement of internal corporate performance, whereby a company's management team evaluates the income generated relative to the company's minimum required return.