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Full-Text Articles in Models and Methods

Daily Stock Market Movement From Oscillating Social Mood Factors, Cari Bourette Dec 2011

Daily Stock Market Movement From Oscillating Social Mood Factors, Cari Bourette

Cari Bourette

Since 2006, there has been ongoing research into the correlation of a set of oscillating mood factors and socioeconomic, geopolitical, and natural events with the goal of forecasting increased risks of destabilizing events. While promising results have been forthcoming, it has been difficult to present models that allowed those outside a small circle of specialists to participate. Between July 2007 and June 2010, weekly social mood projections, as published in monthly issues of MoodCompass, were used to develop a model to convert four oscillating mood factors into stock market expectations. This model was modified to generate signals of projected stock …


How Much Does A Belief Cost?: Revisiting The Marketplace Of Ideas, Gregory Brazeal Jan 2011

How Much Does A Belief Cost?: Revisiting The Marketplace Of Ideas, Gregory Brazeal

Gregory Brazeal

Justice Oliver Wendell Holmes, Jr. is often credited with creating the metaphor of “the marketplace of ideas,” though he did not use the exact phrase and his argument for free speech was not based on distinctively economic reasoning. Truly economic investigations of the marketplace of ideas have progressed in step with developments and trends in the law and economics literature. These investigations have tended to be one-sided, with writers focusing primarily either on the production of ideas (for example, Posner) or their consumption (for example, behavioral law and economics), without considering in depth how producers and consumers interact. This may …


Collective Choice, Justin Schwartz Jan 2011

Collective Choice, Justin Schwartz

Justin Schwartz

This short nontechnical article reviews the Arrow Impossibility Theorem and its implications for rational democratic decisionmaking. In the 1950s, economist Kenneth J. Arrow proved that no method for producing a unique social choice involving at least three choices and three actors could satisfy four seemingly obvious constraints that are practically constitutive of democratic decisionmaking. Any such method must violate such a constraint and risks leading to disturbingly irrational results such and Condorcet cycling. I explain the theorem in plain, nonmathematical language, and discuss the history, range, and prospects of avoiding what seems like a fundamental theoretical challenge to the possibility …