Current empirical research in science and technology studies provides new and different views of science and scientists that contrast markedly with the mythical views that underlie many curricular efforts geared toward increasing scientific literacy. If descriptions of science and scientists that emerge from science and technology studies are legitimate, considerable implications arise for educational aims guiding science instruction, learning experiences directed toward those educational aims, and resources that support those learning experiences and educational aims. In this paper, we (a)
Positive affect systematically influences performance on many cognitive tasks. A new neuropsychological theory is proposed that accounts for many of these effects by assuming that positive affect is associated with increased brain dopamine levels. The theory predicts or accounts for influence of positive affect on olfaction, the consolidation of long-term (ie. episodic) memories, working memory, and creative problem solving. For example, the theory assumes that creative problem solving is improved, in part, because increased dopamine release in the anterior cingulate improves cognitive
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F. Gregory AshbyAlice IsenAnd U. Turken
This article describes the software architecture of an autonomous, interactive tour-guide robot. It presents a modular and distributed software architecture, which integrates localization, mapping, collision avoidance, planning, and various modules concerned with user interaction and Web-based telepresence. At its heart, the software approach relies on probabilistic computation, on-line learning, and any-time algorithms. It enables robots to operate safely, reliably, and at high speeds in highly dynamic environments, and does not require any modifications of the environment to aid the robot's
Children often learn new problem-solving strategies by observing examples of other people's problem-solving. When children learn a new strategy through observation and also explain the new strategy to themselves, they generalize the strategy more widely than children who learn a new strategy but do not explain. We tested three hypothesized mechanisms through which explanations might facilitate strategy generalization: more accurate recall of the new strategy's procedures; increased selection of the new strategy over competing strategies; or more effective management of the new strategy's goal