A general model of human behaviour

The three resulting levels of (operator) behaviour are hierarchically related and defined as follows  

In this thesis the most important implication of this model is the prediction that different types of errors (Skill-, Rule-, or Knowledge-based) imply different types of preventive measures.  

In chapter 5 the relationship between types of error and effective countermeasures will be presented in more detail in the form of a Classification/Action Matrix (see figure 5.3,). 

The SRK model has not been without theoretical criticism. Bainbridge (1984) summarizes two of the main points brought forward against it. Firstly, she mentions problems in interpretation of the words skill , rule , and 

However, in a situation where none of the then available models of human behaviour (or human error) had yet been properly tested, other, more practical, aspects must determine the choice to be made in this project, where the requirement of an effective implementation of such a model in the technical setting of chemical process control (see Chapter 8) was highly important, the Rasmussen model had two important practical advantages  

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