ABSTRACT
Perhaps the most ubiquitous contribution of information-processing theory to the psychology of remembering is the notion of memory retrieval. In its broadest sense, retrieval refers to the utilization of information pre viously stored in memory. However, a distinction can be drawn between cases where the information required from memory for a particular appli cation is stored “directly” and where it must be generated indirectly by “problem solving” or inference from other stored information (Feigen baum, 1970). The two types of retrieval correspond to a distinction be tween computer fact retrieval systems and question-answering systems (Anderson & Bower, 1973). This chapter is concerned with the fact retrieval processes of human memory.