Type 2 tasks in the theory of signal detectability: discrimination between correct and incorrect decisions.

@article{Galvin2003Type2T,
  title={Type 2 tasks in the theory of signal detectability: discrimination between correct and incorrect decisions.},
  author={Susan J. Galvin and John V Podd and Vit F Drga and John Whitmore},
  journal={Psychonomic bulletin & review},
  year={2003},
  volume={10 4},
  pages={843-76}
}
It has been known for over 40 years that there are two fundamentally different kinds of detection tasks in the theory of signal detectability. The Type 1 task is to distinguish between events defined independently of the observer; the Type 2 task is to distinguish between one's own correct and incorrect decisions about those Type 1 events. For the Type 1 task, the behavior of the detector can be summarized by the traditional receiver operating characteristic (ROC) curve. This curve can be… CONTINUE READING