Researchers have also developed an argument regarding how escalation of commitment is observed in two different categories. Many researchers believe that the need to escalate resources is linked to expectancy theory. "According to such a viewpoint, decision makers assess the probability that additional resource allocations will lead to goal attainment, as well as the value of goal attainment (i.e., rewards minus costs), and thereby generate a subjective expected utility associated with the decision to allocate additional resources." The next phase of the escalation process is self-justification and rationalizing if the decision the leader made used resources well, if the resources being used were used to make positive change, and assuring themselves that the decision they chose was right. Leaders must balance costs and benefits of any problem to produce a final decision. What matters most often in assuring the leader that they made the right choice regardless of the final outcome is if their decision is what others believed in.