ABSTRACT
This chapter describes and defines what human error is and explores the different classifications of human error. For a better understanding of the cognitive causes of errors and for designing safer and more error-free systems, further distinctions tap into Jens Rasmussen's work on skill, rule, and knowledge-based (SRK) errors. Human reliability is the extent to which the human is error free and will not make errors. The more reliable the person is, the less likely that person will make errors. The chapter explains the relationship between stress and human error and also describes the purposes of the various agencies that influence safety management. The Technique for Human Error-Rate Prediction (THERP) is the oldest and most well-known technique developed by Alan Swain in 1963 as an extension of Luther Rook's 1962 work. Once the THERP analysis is complete, it is possible to make suggested corrections to the system that would reduce error.
