The Effects of Expected Group Longevity and Expected Task Difficulty on Learning and Recall: Implications for the Development of Transactive Memory

The ability to effectively coordinate with others is a vital component of group success. It is often useful to base this coordination on expectations derived from perceived expertise (transactive memory; Wegner, 1986). Yet, the value of coordination overall and specific coordination strategies vary by task. We argue that the benefit of applying a task-appropriate coordination strategy increases with the number of trials of the task performed (expected longevity), and that the most beneficial strategy varies by task difficulty. We, therefore, predict that coordination increases with expected longevity and that the form of coordination (increased or decreased duplication) depends on expected task difficulty. To test these predictions we manipulate expectations of longevity and difficulty among individuals expecting to work with a partner on a memory task. The predicted relationships are found for both learning and recall. The implications of these findings for the development of transactive memory are discussed.