In Experiment I, complete presentation of the study list produced better free recall learning than did the usual item-by-item (discrete) presentation. The difference was large and held for items occurring one, two, or three times within a list, whether items were spaced or massed, and for discrete presentation rates of 2, 4, and 6 sec/item. Experiment 2 replicated this superiority of complete over discrete presentation (equating total study time), and Experiment 3 extended the finding to paired associate learning. Experiments 2 and 3 indicated that multiple presentations of a list at fast rates were superior to a single presentation at a more standard rate and only slightly inferior to a single, complete presentation, Practical implications for instruction were pointed out, as were problems that certain of the results pose for theories that emphasize strategic (or at least extended) processing of items for encoding.At some point in the distant past, investigators of learning and memory began to use discrete presentation of the materials to be learned. The items forming a list of words or a list of nonsense syllables were presented one at a time for study, perhaps by having each item on an index card, or perhaps by the use of a memory drum or a slide projector. Each item was presented successively for a few seconds, with 2 sec probably being the modal I time for each item across studies. Most of us never gave the matter a thought; to present materials for learning in an experiment meant discrete presentation.Discrete presentation presumably has some merits, in that the subjects are given the same amount of time to study each item, although few investigators would deny that subjects may rehearse items other than the one being shown at the moment. Whatever, our laws of learning and memory are laws of discrete presentation. Discrete presentation is in contrast to complete presentation, wherein the subjects are given the entire list on a sheet of paper and are allowed a given amount of time to study the items.The question of interest is why anyone would choose to use complete presentation. A variety of answers could be given, some of which will be mentioned here. It could be argued that complete presentation has higher ecological validity than does discrete presentation. Being ecologically more valid, complete presentation allows the subjects greater freedom in using their skills to study the items in a manner they choose. Perhaps a more critical answer to the question revolves around the phenomenon of organization. It is common today to place heavy emphasis on organization as a factor in learning and memory. It would seem that most theorists . would accept the idea that subjects could more readily organize their learning when presentation is complete than when it is discrete. If organization is a pivotal notion, it must follow that complete presentation would be superior to discrete presentation in free recall learning. By like reasoning, it would seem to follow that if the task were one for which organization would...