This paper is concerned with a model to simulate a team's decision-making process, named the disagreement solution model which composes SYBORG; Simulation System for the Behavior of an Operating Group . SYBORG simulates the behavior of an operator team coping with abnormal occurrences or events during power plant operations. The disagreement solution model takes into consideration several factors including: the arousal level, confidence, experience, rank, as well as other human characteristics (ascendancy, credibility, etc.) which seem to influence a team's decision-making process. In comparing simulation results produced with this model with actual experimental results, it was determined that the disagreement solution model successfully simulates the decision-making process of a control team under instances or situations of tension. In addition, this research also proposes that errors made within the team's decision-making process can be generally defined as the inability to find a fault in a wrong decision, to indicate errors, or the inability to select the best from many ideas struck upon by the members. Based on this definition, an operating teams' decision-making process, where errors in decisions can be made, may also be simulated by this model.