Prof. Dr. Jan Bredereke

Reference/Literaturverweis [BrLa02]

Bredereke, J., Lankenau, A.:
A Rigorous View of Mode Confusion.
In: Anderson, S., Bologna, S., and Felici, M. (eds.) "Computer Safety, Reliability and Security - 21st Int'l Conf., SafeComp 2002, Proceedings", pp. 19-31. (c) Springer Verlag, LNCS 2434 (Sep. 2002).

Abstract / Zusammenfassung

Not only in aviation psychology, mode confusion is recognised as a significant safety concern. The notion is used intuitively in the pertinent literature, but with surprisingly different meanings. We present a rigorous way of modelling the human and the machine in a shared-control system. This enables us to propose a precise definition of "mode" and "mode confusion". In our modelling approach, we extend the commonly used distinction between the machine and the user's mental model of it by explicitly separating these and their safety-relevant abstractions. Furthermore, we show that distinguishing three different interfaces during the design phase reduces the potential for mode confusion. A result is a new classification of mode confusions by cause, leading to a number of design recommendations for shared-control systems which help to avoid mode confusion problems. A further result is a foundation for detecting mode confusion problems by model checking.


human factors; mode confusion; shared-control system; refinement; rigorous modelling.

Full Text / Volltext

Postscript/gzip (65 kB) - PDF (170 kB)

Extended Version of the Paper / Erweiterte Version des Papiers

see / siehe [BrLa03]

Slides of the Talk / Vortragsfolien

These slides also contain information on the case study which is not in the full text paper version.

PDF (405 kB) - Postscript/4-up/gzip (280 kB)