ABSTRACT
Understanding the development of perception involves issues at multiple levels of analysis. A casual observer might wonder what scientific topic could unite, in a single symposium, discussions of human infants' intermodal perception of speech, microelectrode recording from single cells in cat cortex, and computer programs that simulate the detection of optical information by moving observers. These investigations, as well as others in the symposium on which this volume is based, have illustrated the various levels of approach to perceptual development, and have provided some clues about how the levels fit together.
