ABSTRACT
A salient lesson of recent work in the philosophy of mind is that there can be no methodological objection to a psychology that is mentalistic. Because the work of a number of comparative psychologists indicates that that field is beginning to emancipate itself tentatively from the strictures of behaviorism, it may be well to review the philosophical issues concerning human perception and cognition that have convinced many philosophers that a science of the mind may postulate the existence of representations and information-processing devices. These philosophical considerations have not arisen in a vacuum, but coincide with the development within human psychology of mentalistic models and theories that appear to be fruitful and suggestive.
