Researchers in the field of psychology have found that one of the best ways to make an important decision, such as choosing a university to attend or a business to invest in, involves the use of a decision worksheet. Psychologists who study optimization£¨×î¼Ñ»¯£©compare the actual decisions made by people to theoretical ideal decisions to see how similar they are. Advocates of the worksheet procedure believe that it will yield optimal, that is, the best decisions. Although there are several variations on the exact format£¨¸ñʽ£©that worksheets can take, they are all similar in their essential aspects. Worksheets require defining the problem in a clear way and then listing all possible solutions to the problem. Next, the related considerations that will be affected by each decision are listed, and the relative importance of each consideration or consequence is determined. Each consideration is assigned a numerical value to reflect its relative importance. A decision is mathematically calculated by adding these values together. The alternative with the highest number of points emerges as the best decision.