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The need to divide attention in order to deal with information flowing in from a number of sources is observable in many work settings. Althou gh most people can perform several simple activities concurrently, such as eating and watchin g television (Sharon, 1997), making simultaneous decisions is difficult (Pashler & Johnston, 199 8). For the majority, task overload causes errors in performance (Girard, 2007), a decline in the qua lity of treatment (Ruthruff et al., 2001), and longer reaction time (Levy et al., 2006). The few w ho cope efficiently under such circumstances employ different cognitive strategies. Teamwork is one way of managing multiple demands. Group work makes it possible to deal with larger amounts of information and to generate a var iety of ideas as well as to minimize faulty conclusions. On the other hand, individuals make speedier and better decisions, and are not subject to the tensions of interplay (Davis and Tosela nd, 1987). The literature offers little information on methods of testing the conditions under which ta sks should be handled by one agent or a team. The educational project described here was conducte d comparing efficiency of performance of a series of tasks by individuals and small groups. 11 6 participants, ranging in age from high school level through holders of Masters' degrees, 58 women and the same number of men, were presented with a computer game based on educational software. Participants were instructed to manipulate a tracker by means of the keyboard in orde r to contact a target moving randomly on the screen. The game was arranged in five levels of dif ficulty. A comparison was made of the speed in which objectives were attained when performed individually and when divided among groups of two to four partners, controlling for the type o f coordination, cognitive style and additional background variables. Cases of expedient and inexpe dient division of labor were identified, as were factors affecting feasibility. Among the latte r were the size of the simultaneous task load, complexity level, number of participants, and the i ntensity of coordination required among them.

Performance of Simple and Complex Computerized Learning Tasks: Division of Attention vs. Division of Labor