A Distributed Signal Detection Theory Model: Implications to the Design of Warnings

A distributed signal detection theory model is employed to analyze the effectiveness of warnings under different operating conditions. In particular, the following two cases are examined: the warning on a product is always present, and the warning on a product is administered selectively. The comparative effects of warning versus no warning are described. It is established that selectivity always increase effectiveness. Furthermore, the implications of intermittent hazard versus continuous hazard are discussed.