This review of the current status of the human information processing model presents the Stahl Perceptual Information Processing and Operations Model (SPInPrOM) as a model of how thinking, memory, and the processing of information take place within the individual learner. A related system, the Domain of Cognition, is presented as an alternative to Bloom's Taxonomy; it is designed as a system for identifying the sequence of thinking and processing likely to result in several different levels of learned behavior. A sequence of 21 uniproccesses, or mental operations, which an individual may use at these different levels is also presented. The implications of the SPInPrOM model and the Domain of Cognition system for instructional design are considered, and specific examples of their use in a new instructional design framework are presented. Three figures and bibliographic Hes are provided. (76 references) (EW)