I n the aftermath of catastrophic events, when plans for organized and timely response break down, impromptu groups often emerge to provide disaster relief. Much remains to be learned about the internal dynamics of these emergent response groups whose representatives may include members from organizations with relief missions; private sector organizations offering resources; and private citizens with the information, relationships, or physical and mental stamina to help. Organizational theories have the potential to contribute to a better understanding of emergent response groups and how they efficiently coordinate knowledge, people, resources, tasks, and technology, thereby substantially improving disaster response for future catastrophes. We apply one organization science theory toward better understanding of these groupstransactive memory systems theory-which is a theory about knowledge coordination in groups. Our application of this theory to emergent response groups requires extending the theory in three ways: the role of expertise in task assignment, how groups function when credibility in member expertise cannot be validated, and how expertise is coordinated. By demonstrating how transactive memory systems theory can be extended to the unique operating conditions of emergent response groups, we hope to inspire organization science researchers to accept the challenge of adapting their theories to study this important problem of our time.
T ransactive memory is the shared division of cognitive labor with respect to the encoding, storage, retrieval, and communication of information from different knowledge domains, which often develops in groups and can lead to greater efficiency and effectiveness. Although discussions of transactive memory theory suggest that components of the theory are dynamic, research tends to treat transactive memory as evolving linearly, using static measures rather than assessing development over time. In response, we offer a model emphasizing both linear and cyclical aspects of transactive memory development in work groups, and we propose that task is a major influence on developmental processes. We introduce task representation and the task-expertise-person (TEP) unit as basic constructs involved in transactive memory development, and we provide a dynamic model of how TEP units are constructed, evaluated, and utilized. Regarding observable changes over time, we propose that transactive memory systems can vary in terms of accuracy (the degree to which group members' perceptions about others' task-related expertise are accurate), sharedness (the degree to which members have a shared representation of the transactive memory system), and validation (the degree to which group members participate in the transactive memory system). Convergence is the optimal state of transactive memory systems and reflects high levels of accuracy, sharedness, and validation.
TWo experiments examined retrieval processes in transactive memory systems (D. M. Wegner, 1987). In Experiment 1, intimate couples who worked face to face performed better on a knowledge-pooling task than strangers who worked face to face and better than intimate couples who worked via a computer conferencing system. Additional analyses indicated that intimate couples when interacting face to face were better able to determine which partner was correct on questions that only 1 member knew the answer to prior to discussion. In Experiment 2, intimate couples scored significantly better on the knowledge task when they had access to either nonverbal or paralinguistic communication cues than when they had access to neither. Taken together, the results indicate that both nonverbal and paralinguistic communication play an important role in the retrieval of knowledge in transactive memory systems.
A laboratory experiment investigated the processes that underlie the development of transactive memory structures--the organizing schemes that connect knowledge held by individuals to knowledge held by others (D. M. Wegner, T. Guiliano, & P. T. Hertel, 1985). The design was a 2 x 4 factorial that controlled expectations about the partner's knowledge (similar or different from the participant's) and cognitive interdependence, the degree to which participants' outcomes depended on whether they recalled the same or different information as their partner (defined by 4 incentives). Transactive memory was most differentiated when individuals had different expertise and incentives to remember different information and most integrated when individuals had similar expertise and incentives to remember the same information. These findings may help to explain the impact of previous experience and relationships on the development of transactive memory.
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