Our laboratory has been studying the emergence of collective search behavior from a complex systems perspective. We have developed an internet-based experimental platform that allows groups of people to interact with each other in real time on networked computers. The experiments implement virtual environments where participants can see the moment-to-moment actions of their peers and immediatel...

Having the advantage of scalability and efficiency in performing a succesful lookup query, a hierarchically structured P2P is a promising architecture for heterogeneous networks. However, in addition to potentially decrease the system performance, the presence of a superpeer failure event also forces normal peers under its influence to disconnect from the system. Optimally, the disconnected nor...

INTRODUCTION Alcohol use among young people is a major public health concern in Australia and internationally. Research elucidating social norms influencing alcohol use supports the desire to conform to peers. However, there is a lack of evidence on how social norms are transmitted from the community to young people and between family members and peers, as previous studies are limited to mainly...

The purpose of this study is to advance theorizing about how small groups understand health issues through the use of social network analysis. To achieve this goal, an adapted cognitive social structure examines group social norms around a specific health issue, H1N1 flu prevention. As predicted, individual's attitudes, self-efficacy, and perceived social norms were each positively associated w...

While many studies have looked at the treatment of gender in secondary classroom Spain, few focused on LGBTQ+ experiences from a perspective.  Twenty recently graduated students who currently identify as participated semi-structured interviews and focus group centering their school (the data collection type respected participants’ personal preferences). Participants reported receiving litt...

The Wage Effects of Social Norms: Evidence of Deviations from Peers’ Body-Mass in Europe We investigate wage effects of deviations from peer group body mass index (BMI) to evaluate the influence of social norms on wages. Our approach allows for disentangling the influence of the social norm from any (anticipated) productivity effects associated with deviations from a clinically recommended BMI....

This paper explores the coevolution of social networks and behavioral norms. Previous research has investigated the long-term behavior of feedback systems of attraction and influence, particularly the tendency toward homogenization in arbitrary cultural fields. This paper extends those models by allowing that norms diffuse not only by simple contagion but through intentional sanctioning behavio...

Contour lines totally fix the structure of leftcontinuous t-norms. For each t-norm, these contour lines are determined by the corresponding residual implicator. Most properties involving residual implicators can now easily be translated into properties involving contour lines. As the portation law expresses associativity, we dispose of a powerful tool for constructing left-continuous t-norms. I...

This article looked at the association between perceptions about condom use among one’s peers, beliefs about new HIV treatments, and HIV sexual risk behavior among YBMSM (aged 18-25) in Atlanta. The results of the study showed that 30% of the participants reported unprotected anal intercourse in the three months prior to the study. Stronger peer condom norms predicted lessfrequent risky sexual ...

We study the formation of gender identity by looking at the labor-market decisions of young women. Specifically, we investigate whether and how a woman’s work behavior depends on the work behavior of her mother and that of her friends’ mothers. Using a representative sample of U.S. teenagers and their schoolmates followed over time, we find that both intergenerational channels positively affect...