Trust in triads: Experience effects

Buskens et al. (2010; hereafter BRV) tested game-theoretic hypotheses about embeddedness effects on trust experimentally. We provide evidence from an extended replication of their experiment. The new experiment sheds light on how experience affects behavior in embedded Trust Games.     

The social networks of new-generation migrants in China’s urbanized villages: A case study of Guangzhou

The integration of rural migrants into China’s urban society has drawn extensive attention in recent years. There are, however, a growing number of new-generation migrants whose prospects of integration cannot be gleaned from the experience of their predecessors—the old-generation migrants. The reconstruction of migrant network is a lens through which one can examine the extent and pattern of their integration. In this paper, using quantitative data derived from a survey of eight urbanized villages in Guangzhou, we examine the socio-spatial pattern of migrant networks and the role of receiving neighborhoods in social interactions, with a focus on inter-generational differences. The findings show that new-generation migrants are more likely to draw on cross-class, non-kin, and non-territorial networks when seeking social support, but that hometown-based bonds and the urbanite-migrant divisions remain central to their social networks. For the role of receiving neighborhoods, although new-generation migrants have weak neighborly interactions, they construct numerous colleagues and friendship ties that transcend the boundaries of neighborhoods. Moreover, educational attainment, income level, and occupation structure are important determinants of the nature of new-generation migrant networks. The results suggest that generational factors should be highly considered when studying the integration of migrants into Chinese urban society. Accordingly, the integration of migrants into the urban society will be a conflictual and contradictory process.     

Games of Competition in a Stochastic Environment

The paper presents a set of games of competition between two or three players in which reward is jointly determined by a stochastic biased mechanism and players’ choices. More specifically, a resource can be found with unequal probabilities in one of two locations. The first agent is rewarded only if it finds the resource and avoids being found by the next agent in line; the latter is rewarded only if it finds the former. Five benchmarks, based on different psychological and game-theoretic assumptions are derived and their predictions compared to actual behavior of 120, 40, and 48 participants playing repeatedly. Of the five benchmarks—the unique (Nash) equilibrium, reinforcement learning, trust-based efficiency, maximum unpredictability, and regret-based (Impulse Balance) equilibrium—regret for missed opportunities best accounts for the qualitative aspect of participants’ behavior and regret attenuated by randomization best accounts for the quantitative aspect of behavior.     

Ex Post Problems in Buyer–Supplier Transactions: Effects of Transaction Characteristics, Social Embeddedness, and Contractual Governance

This paper focuses on ex post governance of inter-firm transactions. We develop and test hypotheses on the occurrence of ex post problems like delivery delays, inferior quality, and insufficient service in buyer–supplier transactions. Our hypotheses address effects of transaction characteristics, of social embeddedness, and of contractual governance on the occurrence of problems. Other than earlier research on embeddedness effects in this field, we consider not only effects of dyadic embeddedness but also effects of network embeddedness. We test hypotheses using rich survey data on more than 1200 purchases of information technology (IT) products: hardware and software, both standard and complex. We find evidence for effects of transaction characteristics on the occurrence of problems, while our data do not support hypotheses on effects of contractual governance. Our data provide rather consistent support for hypotheses on the effects of embeddedness. Specifically, we find evidence that network embeddedness reduces problems.     

Changing Homeowners' Behaviors Involving Toxic Household Chemicals: A Psychological, Multilevel Approach

We describe an education and behavior change program with a multi-level approach. The program goal is to change how people think about, use, store, and dispose of toxic household chemicals. We assume that changing long-standing behaviors is difficult, requires interventions at multiple points in the individual/group/society/physical environmental system, and requires interventions that address both short- and long-term behavior change. The heart of our program is small group discussions, with a trained leader who uses psychological theories to increase educational impact. Questionnaires indicated that participants were very pleased with the program, especially recipes for homemade nontoxic alternatives. We estimate that the presentation yielded almost three times as much cooperation as the previous 5 years of publicity and promotion (33% vs. 12%).     

The Legal System and Alzheimer’s Disease: Social Workers and Lawyers’ Perceptions and Experiences

The expected increase in the number of people living with Alzheimer’s disease (AD) worldwide will be accompanied by an increase in the number of cases involving persons with AD brought up to the courts. This study examined the perceptions and experiences of social workers and lawyers regarding these cases. Three focus groups including social workers and lawyers (n = 26) were conducted. Two main themes were raised by the participants: (a) the role of social workers and lawyers in court cases regarding AD, and (b) the need for improving legal encounters involving persons with AD. Similarities and differences were found in both professionals’ interpretations of these shared themes. Results of this study emphasize the need for increasing the knowledge and interprofessional training provided to social workers and lawyers involved in legal cases dealing with issues involving persons with Alzheimer’s disease.     

On the Inconsistency of Equilibrium Refinement

Consistency and optimality together with converse consistency provide an illuminating and novel characterization of the equilibrium concept (Peleg and Tijs, 1996). But (together with non-emptiness) they preclude refinements of the equilibrium notion and selection of a unique equilibrium (Norde et al., 1996). We suggest two escape routes: By generalizing the concept of strict equilibrium we question the practical relevance of the existence requirement for refinements. To allow for equilibrium selection we suggest more complex reduced games which capture the inclinations of ``players who already left'.