ABSTRACT
In Human Reliability Analysis (HRA), human performance is often represented by a set of Performance Shaping Factors (PSFs). These PSFs can be used in HRA methods to estimate Human Error Probabilities (HEPs).The current HRA methods rely on sets of PSFs that range from a few (e.g. 8 PSFs in SPARH) to over 50 PSFs in IDAC, with varying degrees of overlap between the PSFs. However, very few methods address the overlap or the inherent dependency between the PSFs.The methods that do address dependency among PSFs generally rely on linear or loglinear combinations of PSFs.
