One important issue relates to the way observers process, understand and utilize facial cues.
This shows that on average observers process the two stimulus types in different ways which cannot be attributed to low-level motion differences since the velocity profile was identical for the two conditions.
The SDL system obtained can then be used for the analysis of the addressed security properties, by using an observer process schema.
To do so, we repeated the ideal observer process, but we substituted the relevant perceptual demand for the baseline condition.
The 'gain/bias' component in the inner loop of Figure 5(A) and the weights in Figure 5(B) reflect the calibration of the observer process.
This illustrates one of the important roles for regulatory agencies and industry groups (e.g. The Institute of Nuclear Power Operations) in the observer process – to integrate across large samples in order to detect significant safety issues that are hidden in the noise at more local levels.
To ensure the reliability of the observation process, our observer and a second observer, who has extensive experience in conducting observational studies, independently observed and recorded the same activities of four PCWs for a period of four hours.
There are two reasons why graphics are recommended to present the probability of harm: graphics lead to more risk aversion than numerical probability information alone, and graphics allow the observer to process information more effectively then when numbers are presented on their own [ 29].
This was also seen for the patient presented in Fig. 1 where the rating of the standard image with regard to diagnostic detectability was good by observer A and B, and sufficient by observer C, while the processed half-time image was rated as sufficient by all observers.
