A basic study on human error in communication network operation

Human error factors in communication network operation are classified into three levels based on a human problem solving model. It is shown that the most important factor in reducing human error is the appropriate display of action outcome. This display influences the errors in the forming-intention stage. Human reliability evaluation tests are carried out from the viewpoint of the outcome display method. Relationships between human errors and mental load are investigated. As a result, some principles concerning the amount of displayed outcome and methods of presenting the outcome are obtained. Moreover, the influence of information overload on human error is discussed