Use of the contingent valuation method is controversial among economists because it is based on hypothetical rather than real choices. Previous experiments have suggested that the commonly used dichotomous choice contingent valuation method leads to hypothetical bias, i.e., overestimates the...

In a laboratory experiment, we create relationships between pairs of anonymous subjects through a Prisoners' dilemma game. Thereafter the same subjects play a private values bargaining game with or without communication. Communication substantially increases bargaining efficiency among subjects...

General intelligence (g) and virtually all other behavioral traits are heritable. Associations between g and specific single-nucleotide polymorphisms (SNPs) in several candidate genes involved in brain function have been reported. We sought to replicate published associations between g and 12...

Preferences are fundamental building blocks in all models of economic and political behavior. We study a new sample of comprehensively genotyped subjects with data on economic and political preferences and educational attainment. We use dense single nucleotide polymorphism (SNP) data to estimate...

Guilt averse individuals experience a utility loss if they believe they let someone down. For example, generosity depends on what the donor believes that the recipient expects to receive. We measure guilt aversion in three separate experiments: a dictator game experiment, a complete information...

In an ultimatum bargaining experiment, we study how subjects bargain over the returns to their investments of money and time. The most notable finding is that a third of the subjects demand no compensation for their time investments, whereas almost all subjects demand compensation for equally...