There has been a conflict among several theories of memory as to whether the duration of the rehearsal of an item is necessarily related to its long-term retention. This conflict has centered on the question of whether rote rehearsal intended solely to maintain an item in awareness will lead to an increase in long-term-memory performance for that item. This question has been addressed with a variety of paradigms and has been answered in several ways. A review of the literature suggests that the duration of maintenance rehearsal affects the memory trace chiefly by increasing self-coding (item information) and that, consequently, its effects tend to be more evident on recognition than on recall tests.Research in psychology too often fails into a predictable pattern. A phenomenon is reported and excites great interest Experimentation on this phenomenon is carried on feverishly for a period of time. Then interest in it tapers off, usually without any firm conclusions being reached. On the surface, one might see this pattern exemplified by the study of the long-term effects on memory of maintenance rehearsal. Research on this topic was carried on quite heavily in the 1970s, and it seems to be lessening today. I argue, however, that the research on maintenance rehearsal was not in vain but rather established empirical principles of considerable importance.It is easy to trace the beginning of modern research on maintenance rehearsal. Waugh and Norman (1965) placed great emphasis on the role of rehearsal in transferring information into permanent storage in memory. By rehearsal, they meant the "recall of a verbal item-either immediate or delayed, silent or overt, deliberate or involuntary" (Waugh & Norman, 1965, p. 92). (for a discussion of the definition of the term rehearsal and of the ways in which this term has been used by memory researchers, see Johnson, 1980, andPeynircioglu, 1982.) Waugh and Norman (1965) went on to claim, "Rehearsal transferred a recently perceived verbal item from one memory store to another more commodious store from which it can be retrieved at a much later time" (p. 92). Following James (1890), Waugh and Norman called these stores primary memory and secondary memory.Atkinson and Shiffrin (1968) developed their own highly influential multistore model of memory. As in the Waugh and Norman (1965) model, rehearsal was responsible for the transfer of information between primary and secondary memory (or, as Atkinson and Shiffrin called them, short-term store and longterm store). Rehearsal served this function at least in part simply by maintaining information in the short-term store. As Atkinson and Shiffrin (1968) noted, "Throughout the period that information resides in the short-term store transfer takes place to long-term store" (p.