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Self-perception theory predicts that intrinsic and extrinsic motivation do not combine additively but rather interact. To test this predicted interaction, intrinsic and extrinsic motivation were both manipulated as independent variables. The results revealed a significant interaction for task satisfaction and a trend for the interaction on a behavioral(More)
JSTOR is a not-for-profit service that helps scholars, researchers, and students discover, use, and build upon a wide range of content in a trusted digital archive. We use information technology and tools to increase productivity and facilitate new forms of scholarship. For more information about JSTOR, please contact support@jstor.org.. INFORMS is(More)
Although the escalation literature has grown steadily over the past 20 years, there has been very little research bridging the gap between laboratory experiments and qualitative field studies on escalation. What has been missing are quantitative tests of escalation hypotheses in their natural context. This study helps fill such a gap by testing the(More)
We examined whether press reports on the collective mood of investors can predict changes in stock prices. We collected data on the use of emotion words in newspaper reports on traders' affect, coded these emotion words according to their location on an affective circumplex in terms of pleasantness and activation level, and created indices of collective(More)
The papers in this volume can be characterized by a ''cohesion–creativity divide.'' On one side are scholars who describe the very nature of groups – its norms, interaction patterns, social influence, and hierarchy – as anathema to creativity. On the other side are advocates of cohesion and coordination, where the primary benefits of groups are to draw(More)