Recent investigations have uncovered large, consistent deviations from the predictions of the textbook representation of Homo economicus (Roth et al, 1992, Fehr and Gächter, 2000, Camerer 2001). One problem appears to lie in economists’ canonical assumption that individuals are entirely self-interested: in addition to their own material payoffs, many experimental subjects appear to care about f...

The purpose of research was analyzing attitude of agricultural high school educators in Khouzestan province, Iran regarding sustainable agriculture. The method of research was correlative descriptive. All agricultural high school educators in Khouzestan province (n=55) were selected for participation in the study. A questionnaire was developed to gather information regarding attitude of educato...

We propose a power-law growth and decay model for posting data to social networking services before and after social events. We model the time series structure of deviations from the power-law growth and decay with a conditional Poisson autoregressive (AR) model. Online postings related to social events are described by five parameters in the power-law growth and decay model, each of which char...

Common models of social preferences usually assume the existence of a preference for other-regarding behavior / equal sharing. And, apart from this preference being potentially idiosyncratic in strength, qualifications are at most made informally on conferences when empirical deviations from predictions are explained by contextual variables. Starting from this observation, we present a simple f...

OBJECTIVE To evaluate the German version of the Social Phobia Inventory (SPIN) as a screening device and to report corresponding cut-off scores for different populations. METHOD In Study 1, 2043 subjects from a representative sample completed the SPIN. Cut-off values were established on the basis of means and standard deviations. In Study 2, different aspects of validity were examined in a cl...