Institutional anomalies in the contemporary art market

This paper analyses two anomalies of the contemporary art market and the institutions created in order to allow the market to develop. The first anomaly concerns the incomplete specification of property rights in the market of successful artists. The second one originates with the lack of credibility, or time consistency, that characterises the relationships between young artists and gallery owners.     

Entrapment in the Net?

Internet stings to catch child molesters raise problems for popular tests of entrapment that focus on causation, initiative, counterfactuals, and subjective predisposition. An objective test of entrapment works better in the context of the Internet. The best form of objective test is determined by consequences of drawing a line at various places. This approach allows some Internet stings but counts other stings as entrapment when they go too far.     

The influences of methylphenidate on heart rate and behavioral measures of attention in hyperactive children.

Reaction-time performance and heart-rate responses associated with attention were used to assess the hyperactive child's attentional deficit and his response to methylphenidate. Attentional deficits shown by long response latencies were reflected in heart-rate responses theoretically incompatible with sustained attention. Subjects exhibiting the greatest attentional deficit displayed the most favorable response to methylphenidate in both reaction-time performance and physiological measures. However, subjects who showed the greatest improvement in social behavior were those who showed the least improvement in reaction-time performance.     

Effect on Primary Level Students of Inservice Teacher Education in an Informal Science Setting

Journal of Science Teacher Education -