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z-Tree: Zurich toolbox for ready-made economic experiments
Abstractz-Tree (Zurich Toolbox for Ready-made Economic Experiments) is a software for developing and conducting economic experiments. The software is stable and allows programming almost any kind ofExpand
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Are People Conditionally Cooperative? Evidence from a Public Goods Experiment
We study the importance of conditional cooperation in a one-shot public goods game by using a variant of the strategy-method. We find that a third of the subjects can be classified as free riders,Expand
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Third Party Punishment and Social Norms
We examine the characteristics and relative strength of third-party sanctions in a series of experiments. We hypothesize that egalitarian distribution norms and cooperation norms apply in ourExpand
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Oxytocin increases trust in humans
Trust pervades human societies. Trust is indispensable in friendship, love, families and organizations, and plays a key role in economic exchange and politics. In the absence of trust among tradingExpand
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A Theory of Reciprocity
This Paper presents a formal theory of reciprocity. Reciprocity means that people reward kind actions and punish unkind ones. The theory takes into account that people evaluate the kindness of anExpand
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The nature of human altruism
Some of the most fundamental questions concerning our evolutionary origins, our social relations, and the organization of society are centred around issues of altruism and selfishness. ExperimentalExpand
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Social Preferences, Beliefs, and the Dynamics of Free Riding in Public Good Experiments
One lingering puzzle is why voluntary contributions to public goods decline over time in experimental and real-world settings. We show that the decline of cooperation is driven by individualExpand
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Lies in Disguise. An experimental study on cheating
In this paper we present a new design which allows us to draw inferences on the distribution of lying behavior among the population. Participants received a dice in order to determine their payoffExpand
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Social norms and human cooperation
The existence of social norms is one of the big unsolved problems in social cognitive science. Although no other concept is invoked more frequently in the social sciences, we still know little aboutExpand
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Oxytocin Shapes the Neural Circuitry of Trust and Trust Adaptation in Humans
Trust and betrayal of trust are ubiquitous in human societies. Recent behavioral evidence shows that the neuropeptide oxytocin increases trust among humans, thus offering a unique chance of gaining aExpand
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