ABSTRACT
O. G. Self ridge's Pandemonium model asserted that recognition involves the operation of a parallel bank of feature analysers. The serial-parallel issue also figured in the discussion of visual information storage, where the nature of the transfer from visual information storage (VIS) to later storage systems was in question. Some of the difficulties facing a theoretical approach which takes the serial-parallel dichotomy as one of its cornerstones were explained by A. J. Marcel in the course of an investigation using multi-attribute stimuli. The research on serial and parallel processing seems if anything to make the task of the pattern recognition theorist even harder, since it appears that the ways of processing information are more varied than was at first imagined. A parallel model which does predict the linear relation assumes that processing capacity is fixed. H. E. Egeth found that when stimuli are different the RT decreases as the number of attribute differences increases.
