Quantitative Models of Perceiving and Remembering Faces: Precedents and Possibilities

east begin to see where some of these potential lines of inquiry may lie. The psychological concepts that we believe readers will find familiar in this chapter concern issues of measurement, representation, and task demands. These are issues encountered in nearly all models of psychological phenomena. Specifically, we will ask the following kinds of questions. How do you measure the information in a stimulus when the stimulus is a face? How do we represent sub-categories of stimuli, e.g., for faces, male and Quantitative Models of Face Cognition 3 female, young and old? Finally, how do the demands of the task and the nature of the processor constrain our access to and use of the information in the representation? This chapter is organized as follows. We first give a brief overview of the kinds of tasks we must accomplish with human faces. This defines the nature and diversity of the output that computational models must produce to be considered successful. We next pr