Sequence Matters: an Experimental Study of the Effects of Experiencing Positive and Negative Reciprocity

This paper presents an experimental analysis of people’s behavior in situations involving both positive and negative reciprocity. The experiment implements sequences of two types of extensive form games called Punishment games and Trust games. The contemporaneous use of these two types of games allows us to define an ideal framework for understanding the basic elements of reciprocal behavior. Results show that the level of trust and punishment are consistent with the view that emotions are involvedReciprocity, trust, intentions, emotions, experiments J.E.L. Classification: D63, C78, C91

News sources and media bias

In this paper we investigate the relationship between news sources and media firms. Although empirically important, this channel for supply-driven media bias has not previously been analyzed in economics literature. We model the relationship as an informal contract based on trust and punishment, where a news source decides if and how much information to provide to a media firm. Strategic interactions between these agents may have a significant impact on the level of media bias in the market. In particular, we show that in some cases the news source provides information if and only if there is competition in the media market, while in other cases competition between media firms reduces the amount of information that is made available to the audie

Collectivized Intellectualism

We argue that the evolutionary function of reasoning is to allow us to secure more accurate beliefs and more effective intentions through collective deliberation. This sets our view apart both from traditional intellectualist accounts, which take the evolutionary function to be individual deliberation, and from interactionist accounts such as the one proposed by Mercier and Sperber, which agrees that the function of reasoning is collective but holds that it aims to disseminate, rather than come up with, accurate beliefs. We argue that our collectivized intellectualism offers the best explanation of the range of biases that human reasoning is prone to, and that it does better than interactionism at offering a function of reasoning that would have been adaptive for our distant ancestors who first evolved this capacity

Detection performance and mitigation techniques in CR networks

Pervasive wireless communications rely enormously on spectrum utilization; the increase in demand for new wireless services and their application has led to spectrum scarcity. Spectrum limitations can be resolved by cognitive radio (CR) which is a technology that allows secondary users (SUs) to use the spectrum when it is not occupied by primary users (PUs). In this thesis, the security issues that decrease CR performance are discussed; there are two major threats i.e. primary user emulation attack (PUEA) and spectrum sensing data falsification attack (SSDF). Firstly, the CR network (CRN) is simulated whereby PUs and SUs are presented in the system with the presence of multiple malicious users that are randomly located within a circle of radius (R). The simulation results, based on an analytical model, show that the false alarm probability is significantly affected by the network radius Rand malicious users' number, and it is proved that there is a range of R over which the PUEAs are most successful. Secondly, a transmitter verification scheme (direct scheme) and indirect trust scheme that considers the users' history are presented; the results proved that if the signal to noise ratio (SNR) is raised, correspondingly the t:rnstworthiness of the PU is considerably increased. Based on these two schemes, the trnstworthiness of the PU is much higher than that of the malicious user and because the indirect scheme considers the historical behaviour of the user, it improves the user's trustworthiness.Finally, cooperative spectrum sensing (CSS) approaches are proposed, namely, a trust based approach, a punishment based approach and a dedicated punishment based approach. It is proved that these proposed CSS approaches outperform the traditional majority scheme despite a high number of malicious users. In addition, the dedicated punishment approaches which punish only the malicious users outperform the other approaches

Why Trust Out-groups? The Role of Punishment Under Uncertainty

We conducted a hidden-effort trust game, in which we assigned subjects to one of two groups. The groups, which were formed through two different group formation processes, included a “social” group that required sharing and exchange among its members, and a “non-social” group that did not. Once assigned, subjects participated in the game with members from both groups, either with or without the opportunity to punish a trustee who may have defected on them. We found that for investors in the non-social group, the opportunity to punish a trustee worked to promote trust, but only when the trustee was a member of the other group. For the social group, the opportunity to punish had no effect on the investors’ trust decisions, regardless of the trustee\u27s group. We provide a theoretical framework to explain this asymmetric effect of punishment on trust. Our results suggest that groups with identities founded in sharing and exchange—a feature of globalized societies—may find it less necessary to engage in costly punishment. As a result, they may enjoy gains in economic efficiency

A friendly offer – fairness and social embeddedness = Baráti ajánlat – méltányosság és társadalmi beágyazottság) [védés előtt]

The main research question of my thesis is the investigation of fairness and embeddedness using tools of experimental economics. I introduce a novel approach, which enables the investigation of the interaction between fairness and embeddedness using dictator and ultimatum games. / === / Értekezésem fő kérdése tehát a méltányossági normák és a társadalmi beágyazottság (barátság) vizsgálata kísérleti eszközök segítségével. Egy – az eddigiektől nagymértékben eltérő – kísérleti módszert alkalmazok, amely segítségével a méltányosság és az emberi kapcsolatok kölcsönhatása is vizsgálhatóvá válnak az ultimátum és diktátorjátékkal végzett kísérletekben

Ayudando a otros a usar los medios sociales:: Estereotipos de edad al estimar el éxito del alumno

Social networking sites (SNS) include online products such as Facebook that allow users to build and maintain large interpersonal Inter net networks. Older adult users have dramatically increased (Duggan & Smith, 2014). This investigation examined how 212 university undergraduate Facebook users estimated success with helping others use Facebook when learner’s age (20, 40, 60 year olds.) and type of acquaintance (friend or kin) was manipulated in hypothetical scenarios. In these scenarios, a person is identified as KW, described as being a college student much like the participant. KW has 20, 40 or 60 year -old acquaintances, a friend or a ki n at each age, all wanting KW’s help learning about social media. This was the only information provided. Qualities and strengths of these interpersonal relationships were not examined. Results from repeated measures 2x3 ANOVA showed a significant main eff ect for age, but no effect for acquaintance type. Results showed no significant interaction. Although the age demographic above 50 years is the fastest growing SNS group, results showed possible age stereotyping among youth when they assist older adults le arning to use SNS. This age effect may be lessened as older adults become more skillful social media users. These findings are limited because of the sample demographics and a lack of identifying qualities of participants’ attributions about the hypothetic al friends or relatives. Future research using multiple items per condition might be able to further elucidate how the type of associations between helper and learner, close or distant, positive or negative, would influence outcomes

With God We Trust: Religion, Trust and Cooperation in Large-Scale Societies

The first aim of this paper is to revisit the puzzle of cooperation in large-scale societies.It proposes a game theoretic model showing how endogenous emotion-based punishment can sustain ull cooperation when interactions are not repeated, provided that players' endogenous trust is high enough. The model the signalling theory of religion. Finally, the model enables clear and tractable predictions about the levels of religious affiliation and participation within a society. Evidence of the model's implications is discussed

Gratitude for Help among Adult Friends and Siblings

Peer reviewe

Intrinsic and Extrinsic Compliance Motivations: Comment on Feldman

The author discusses extrinsic and intrinsic compliance motivations. She focuses on an essay by Yuval Feldman which claims that extrinsic motivation potentially acts in concert with or undermines intrinsic motivation. She also notes that deeper considerations for multiple motivations can add nuance and accuracy to the understanding of litigant behavior