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Shared and drug-specific effects of atomoxetine and methylphenidate on inhibitory brain dysfunction in medication-naive ADHD boys

The stimulant methylphenidate (MPX) and the nonstimulant atomoxetine (ATX) are the most commonly prescribed medications for attention deficit hyperactivity disorder (ADHD). However, no functional magnetic resonance imaging (fMRI) study has as yet investigated the effects of ATX on inhibitory or any other brain function in ADHD patients or compared its effects with those of MPX. A...

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English / 01/01/2014

Automatic detection of trustworthiness of the face: A visual mismatch negativity study

Recognizing intentions of strangers from facial cues is crucial in everyday social interactions. Recent studies demonstrated enhanced event-related potential (ERP) responses to untrustworthy compared to trustworthy faces. The aim of the present study was to investigate the electrophysiological correlates of automatic processing of trustworthiness cues in a visual oddball paradigm in...

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English / 01/01/2014

Inferring on the intentions of others by hierarchical bayesian learning

Inferring on others' (potentially time-varying) intentions is a fundamental problem during many social transactions. To investigate the underlying mechanisms, we applied computational modeling to behavioral data from an economic game in which 16 pairs of volunteers (randomly assigned to “player” or “adviser” roles) interacted. The player performed a probabilistic reinforcement...

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English / 01/01/2014

Cable regulation in the internet era

The market for multi-channel video programming has undergone considerable change in the last 15 years. Direct-Broadcast Satellite service, spurred by 1999 legislation that leveled the playing field with cable television systems, has grown from 3% to 33% of the U.S. MVPD (cable, satellite, and telco video) market. Telephone operators have entered in some parts of the US and online...

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English / 01/01/2014

Unternehmer mit Biss

Unternehmer braucht das Land, sagt der Ökonom Fabrizio Zilibotti: Sie sorgen
für Innovationen und wirtschaftliche Entwicklung. Zilibotti erforscht den Esprit
des Unternehmertums und wie dieser weitergegeben wird.

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Deutsch / 01/01/2014

Are empathy and morality linked? Evidence from moral psychology, social and decision neuroscience, and philosophy

Empathy and morality have an important yet very complex relation. This complexity is most likely due to the multifaceted nature of empathy and the uncertainty of knowledge about the nature of morality. This chapter first considers the philosophical debate on the nature of morality. Second, it presents empirical data from social neuroscience and psychology to differentiate empathy...

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English / 01/01/2014

Dopaminergic stimulation increases selfish behavior in the absence of punishment threat

RATIONALE: People often face decisions that pit self-interested behavior aimed at maximizing personal reward against normative behavior such as acting cooperatively, which benefits others. The threat of social sanctions for defying the fairness norm prevents people from behaving overly selfish. Thus, normative behavior is influenced by both seeking rewards and avoiding punishment....

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English / 01/01/2014

Bonus schemes and trading activity

Little is known about how different bonus schemes affect traders' propensity to trade and which bonus schemes improve traders' performance. We study the effects of linear versus threshold bonus schemes on traders' behavior. Traders buy and sell shares in an experimental stock market on the basis of fundamental and technical information (past share price evolution,...

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English / 01/01/2014

Eine verpasste Chance

Die Gesundheitsökonomin Anna Sax legt mit «Einheitskasse – warum nicht?» eine Wirkungsanalyse von Wettbewerb und Einheitskasse in der Schweizer Krankenversicherung vor. Der selbst deklarierte Anspruch dieser von der SP Bundeshaus-Fraktion in Auftrag gegebenen Studie ist hoch: Ständerätin Egerszegi verspricht im Vorwort eine Prüfung des Modells einer «öffentlichen Krankenkasse für die...

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Deutsch / 01/01/2014

Randomized tax enforcement massages : a policy tool for improving audit strategies

Reducing tax evasion is a key challenge for governments around the world, particularly in developing countries. This paper presents a methodology to generate information to optimize audit strategies. Randomly selected taxpayers receive a deterrence message. Comparing their subsequent tax payments to a control group allows estimating what types of taxpayers are more likely to respond...

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English / 01/01/2014

A theory of income taxation under multidimensional skill heterogeneity

We develop a unifying framework for optimal income taxation in multi-sector economies with general patterns of externalities. Agents in this model are characterized by an N-dimensional skill vector corresponding to intrinsic abilities in N potentially externality-causing activities. The private return to each activity depends on individual skill and an aggregate activity-specific...

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English / 01/01/2014

Could a website really have doomed the health exchanges? multiple equilibria, initial conditions and the construction of the fine

Public attention has focused on how the launch of the national health exchanges could impact the types of risks who initially enroll and thereby affect future premiums and enrollment. We introduce simple dynamics into a standard model of insurance under adverse selection to show that such "initial conditions" can indeed matter. When firms are price-takers, the market can...

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English / 01/01/2014

Unternehmer mit Biss

Unternehmer braucht das Land, sagt der Ökonom Fabrizio Zilibotti: Sie sorgen
für Innovationen und wirtschaftliche Entwicklung. Zilibotti erforscht den Esprit
des Unternehmertums und wie dieser weitergegeben wird.

Full Text

Deutsch / 01/01/2014

International evidence on the equity premium puzzle and time discounting

We examine time discounting factors in an international survey. Our analysis reveals a significant relationship between time discount factors and historical equity premiums across 27 countries. This result implies that higher historical equity risk premiums are observed in countries where survey participants tend to be more short-term oriented. This finding is consistent with the...

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English / 01/12/2013

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