infonet-economy

The book provides a simple, intuitive introduction to regression models for qualitative and discrete dependent variables, to sample selection models, and to event history models, all in the context of maximum likelihood estimation. It presents a wide range of commonly used models. The book thereby enables the reader to become a critical consumer of current empirical social science...

BACKGROUND: It has been suggested that some psychotic symptoms reflect ‘aberrant salience’, related to dysfunctional reward learning. To test this hypothesis we investigated whether patients with schizophrenia showed impaired learning of task-relevant stimulusreinforcement
associations in the presence of distracting task-irrelevant cues.

METHODS: We tested 20 medicated...

Dans un contexte en transformation, les systèmes nationaux de recherche et d’enseignement supérieur rencontrent des défis semblables : avènement de la société ou de l’économie du savoir, globalisation scientifique, compétitivité, évaluation et, enfin, acceptation sociale des sciences et des techniques. Les Etats (mais aussi les chercheurs) répondent toutefois à ces défis de façon...

In this paper, we provide evidence for functional asymmetries in forward and backward connections that
define hierarchical architectures in the brain. We exploit the fact that modulatory or nonlinear influences of
one neuronal system on another (i.e., effective connectivity) entail coupling between different frequencies.
Functional asymmetry in forward and backward...

Over the last 2 decades, a large number of neurophysiological and neuroimaging studies of patients with schizophrenia have furnished in vivo evidence for dysconnectivity, ie, abnormal functional integration of brain processes. While the evidence for dysconnectivity in schizophrenia is strong, its etiology, pathophysiological mechanisms, and significance for clinical symptoms are...

This paper addresses three empirical findings of the literature on initial public offerings. (i) Why do investment banks earn positive profits in a competitive market? (ii) Why do banks receive lower gross spreads in venture capitalist (VC) backed than in non-VC backed IPOs? (iii) Why is underpricing more pronounced in VC than in
non-VC backed IPOs? While each phenomenon can be...

Relative Einkommensunterschiede lösen innerhalb einer Referenzgruppe oftmals Neid aus. Damit wird das soziale Verhalten und die individuelle Leistungsbereitschaft beeinflusst. In der ökonomischen Forschung ist dennoch bislang der Zusammenhang zwischen relativen Einkommensunterschieden und individueller Leistung wenig untersucht worden. Ein wesentlicher Grund dafür ist sicherlich die...

This paper outlines and analyzes different competitive strategies for an established platform provider in a two-sided market to defend against various forms of attack. Taking into account the characteristics of two-sided markets, we consider strategies based on product innovation
and network effects, process innovation and pricing, multiple platforms, and switching costs....