Experimenting with error abstraction in requirements documents

In previous experiments we showed that the Perspective-Based Reading (PBR) family of defect detection techniques was effective at detecting faults in requirements documents in some contexts. Experiences from these studies indicate that requirements faults are very difficult to define, classify and quantify. In order to address these difficulties, we present an empirical study whose main purpose is to investigate whether defect detection in requirements documents can be improved by focusing on the errors (i.e., underlying human misconceptions) in a document rather than the individual faults that they cause. In the context of a controlled experiment, we assess both benefits and costs of the process of abstracting errors from faults in requirements documents.