Cooperation without Coordination: Signaling, Types and Tacit Collusion in Laboratory Oligopolies

We study the effects of price signaling activity and underlying propensities to cooperate on tacit collusion in posted offer markets. The primary experiment consists of an extensively repeated baseline sequence and a 'forecast' sequence that adds to the baseline a forecasting game that allows identification of signaling intentions. Forecast sequence results indicate that signaling intentions considerably exceed those that are counted under a standard signal measure based on previous period prices. Nevertheless, we find essentially no correlation between either measure of signal volumes and collusive efficiency. A second experiment demonstrates that underlying seller propensities to cooperate more clearly affect collusiveness.Experiments, Tacit Collusion, Price Signaling, TypesExperiments, Tacit Collusion, Price Signaling, Types

Emotional engagements predict and enhance social cognition in young chimpanzees

Social cognition in infancy is evident in coordinated triadic engagements, that is, infants attending jointly with social partners and objects. Current evolutionary theories of primate social cognition tend to highlight species differences in cognition based on human-unique cooperative motives. We consider a developmental model in which engagement experiences produce differential outcomes. We conducted a 10-year-long study in which two groups of laboratory-raised chimpanzee infants were given quantifiably different engagement experiences. Joint attention, cooperativeness, affect, and different levels of cognition were measured in 5- to 12-month-old chimpanzees, and compared to outcomes derived from a normative human database. We found that joint attention skills significantly improved across development for all infants, but by 12 months, the humans significantly surpassed the chimpanzees. We found that cooperativeness was stable in the humans, but by 12 months, the chimpanzee group given enriched engagement experiences significantly surpassed the humans. Past engagement experiences and concurrent affect were significant unique predictors of both joint attention and cooperativeness in 5- to 12-month-old chimpanzees. When engagement experiences and concurrent affect were statistically controlled, joint attention and cooperation were not associated. We explain differential social cognition outcomes in terms of the significant influences of previous engagement experiences and affect, in addition to cognition. Our study highlights developmental processes that underpin the emergence of social cognition in support of evolutionary continuity

A Different Look at Lenin's Legacy: Trust, Risk, Fairness and Cooperativeness in the Two Germanies

What are the long-term effects of Communism on economically relevant notions such as social trust? To answer this question, we use the reunification of Germany as a natural experiment and study the post-reunification trajectory of convergence with regard to individuals' trust and risk, as well as perceived fairness and cooperativeness. Our hypotheses are derived from a model of German reunification that incorporates individual responses both to incentives and to values inherited from earlier generations as recently suggested in the literature. Using data from the German Socio-Economic Panel, we find that despite twenty years of reunification East Germans are still characterized by a persistent level of social distrust. In comparison to West Germans, they are also less inclined to see others as fair or helpful. Implied trajectories can be interpreted as evidence for the passing of cultural traits across generations and for cooperation being sustained by values rather than by reputation. Moreover, East Germans are found to be more risk loving than West Germans. In contrast to trust and fairness, full convergence in risk attitude is reached in recent years.Social trust, risk attitudes, political regimes, German reunification

A Different Look at Lenin's Legacy: Trust, Risk, Fairness and Cooperativeness in the two Germanies

What are the long-term effects of Communism on economically relevant notions such as social trust? To answer this question, we use the reunification of Germany as a natural experiment and study the post-reunification trajectory of convergence with regard to individuals’ trust and risk, as well as perceived fairness and cooperativeness. Our hypotheses are derived from a model of German reunification that incorporates individual responses both to incentives and to values inherited from earlier generations as recently suggested in the literature. Using data from the German Socio-Economic Panel, we find that despite twenty years of reunification East Germans are still characterized by a persistent level of social distrust. In comparison to West Germans, they are also less inclined to see others as fair or helpful. Implied trajectories can be interpreted as evidence for the passing of cultural traits across generations and for cooperation being sustained by values rather than by reputation. Moreover, East Germans are found to be more risk loving than West Germans. In contrast to trust and fairness, full convergence in risk attitude is reached in recent years.social trust, risk attitudes, political regimes, German reunification

A Different Look at Lenin's Legacy: Trust, Risk, Fairness and Cooperativeness in the Two Germanies

What are the long-term effects of Communism on economically relevant notions such as social trust? To answer this question, we use the reunification of Germany as a natural experiment and study the post-reunification trajectory of convergence with regard to individuals’ trust and risk, as well as perceived fairness and cooperativeness. Our hypotheses are derived from a model of German reunification that incorporates individual responses both to incentives and to values inherited from earlier generations as recently suggested in the literature. Using data from the German Socio-Economic Panel, we find that despite twenty years of reunification East Germans are still characterized by a persistent level of social distrust. In comparison to West Germans, they are also less inclined to see others as fair or helpful. Implied trajectories can be interpreted as evidence for the passing of cultural traits across generations and for cooperation being sustained by values rather than by reputation. Moreover, East Germans are found to be more risk loving than West Germans. In contrast to trust and fairness, full convergence in risk attitude is reached in recent years.social trust, risk attitudes, political regimes, German reunification

Just-in-Time Memoryless Trust for Crowdsourced IoT Services

We propose just-in-time memoryless trust for crowdsourced IoT services. We leverage the characteristics of the IoT service environment to evaluate their trustworthiness. A novel framework is devised to assess a service's trust without relying on previous knowledge, i.e., memoryless trust. The framework exploits service-session-related data to offer a trust value valid only during the current session, i.e., just-in-time trust. Several experiments are conducted to assess the efficiency of the proposed framework.Comment: 8 pages, Accepted and to appear in 2020 IEEE International Conference on Web Services (ICWS). Content may change prior to final publicatio

A Realist Defense of the Alien Tort Statute

This Article offers a new justification for modern litigation under the Alien Tort Statute (ATS), a provision from the 1789 Judiciary Act that permits victims of human rights violations anywhere in the world to sue tortfeasors in U.S. courts. The ATS, moribund for nearly 200 years, has recently emerged as an important but controversial tool for the enforcement of human rights norms. “Realist” critics contend that ATS litigation exasperates U.S. allies and rivals, weakens efforts to combat terrorism, and threatens U.S. sovereignty by importing into our jurisprudence undemocratic international law norms. Defenders of the statute, largely because they do not share the critics‟ realist assumptions about international relations, have so far declined to engage with the cost-benefit critique of ATS litigation and instead justify the ATS as a key component in a global human rights regime. This Article addresses the realists‟ critique on its own terms, offering the first defense of ATS litigation that is itself rooted in realism—the view that nations are unitary, rational actors pursuing their security in an anarchic world and obeying international law only when it suits their interests. In particular, this Article identifies three flaws in the current realist ATS critique. First, critics rely on speculation about catastrophic future costs without giving sufficient weight to the actual history of ATS litigation and to the prudential and substantive limits courts have already imposed on it. Second, critics‟ fears about the sovereignty costs that will arise when federal courts incorporate international-law norms into domestic law are overblown because U.S. law already reflects the limited set of universal norms, such as torture and genocide, that are actionable under the ATS. Finally, this realist critique fails to overcome the incoherence created by contending that the exercise of jurisdiction by the courts may harm U.S. interests while also assuming that nations are unitary, rational actors. Moving beyond the current realist ATS critique, this Article offers a new, positive realist argument for ATS litigation. This Article suggests that, in practice, the U.S. government as a whole pursues its security and economic interests in ATS litigation by signaling cooperativeness through respect for human rights while also ensuring that the law is developed on U.S. terms. This realist understanding, offered here for the first time, both explains the persistence of ATS litigation and bridges the gap that has frustrated efforts to weigh the ATS‟s true costs and benefits

Data centric trust evaluation and prediction framework for IOT

© 2017 ITU. Application of trust principals in internet of things (IoT) has allowed to provide more trustworthy services among the corresponding stakeholders. The most common method of assessing trust in IoT applications is to estimate trust level of the end entities (entity-centric) relative to the trustor. In these systems, trust level of the data is assumed to be the same as the trust level of the data source. However, most of the IoT based systems are data centric and operate in dynamic environments, which need immediate actions without waiting for a trust report from end entities. We address this challenge by extending our previous proposals on trust establishment for entities based on their reputation, experience and knowledge, to trust estimation of data items [1-3]. First, we present a hybrid trust framework for evaluating both data trust and entity trust, which will be enhanced as a standardization for future data driven society. The modules including data trust metric extraction, data trust aggregation, evaluation and prediction are elaborated inside the proposed framework. Finally, a possible design model is described to implement the proposed ideas