Kleinberg’s small world model [21] simulates social networks with both strong and weak ties. In his original paper, Kleinberg showed how the distribution of weak-ties, parameterized by γ, influences the efficacy of myopic routing on the network. Recent work on social influence by k-complex contagion models discovered that the distribution of weakties also impacts the spreading rate in a crucial...

Under the tide of global economic integration with aggravated environmental risks caused by intensive human activities, spatial network correlation has become intensified. The close exchange activities among countries under Belt and Road Initiative (BRI) will especially feel this contagion risks. Given situation, article analyzes risk relations BRI characteristics their structure using social a...

By exploiting a comprehensive dataset of Credit Default Swaps (CDS), we investigate the intra-industry credit contagion effect in the context of Chapter 11 bankruptcy, Chapter 7 liquidation, and other credit events defined by extreme jumps in the CDS spread. Our analysis suggests the following findings: First, the credit contagion effect dominates the competitive effect surrounding Chapter 11 r...

In this work, we study diffusion in networks with community structure. We first replicate and extend work on networks with non-overlapping community structure. Then we study diffusion on network models that have overlapping community structure. We study both contagions in the standard SIR model, and complex contagions which are thought to be better approximations of some social diffusion proces...

Prevailing models of capital markets capture a limited form of social influence and information transmission, in which the beliefs and behavior of an investor affect others only through market price, information transmission and processing is simple (without thoughts and feelings), and there is no localization in the influence of an investor on others. In reality, individuals often process verb...

This paper presents three tests of contagion of the US subprime crisis to the European markets of the NYSE-Euronext group. Copula models are used to analyse dependence structures between the US’s and the other markets in the sample, in the pre-crisis and in the subprime crisis periods. The first test assesses the existence of contagion on the relevant markets’ indices, the second checks the hom...

Recent studies have cast doubt on the dominant role of social contagion in new product diffusion. We critically re-assess what is considered the best evidence of social contagion in the diffusion literature: the Medical Innovation study by Coleman, Katz and Menzel(1966) on the diffusion of the antibiotic tetracycline in the mid 1950s. A descriptive analysis of the tetracycline market indicates ...

The concept of contagion has steadily expanded from its original grounding in epidemic disease to describe a vast array of processes that spread across networks, notably social phenomena such as fads, political opinions, the adoption of new technologies, and financial decisions. Traditional models of social contagion have been based on physical analogies with biological contagion, in which the ...

We investigated how psychological distance influences goal contagion (the extent to which people automatically adopt another person's goals). On the basis of construal-level theory, we predicted people would be more prone to goal contagion when primed with psychological distance (vs. closeness) because they would construe the other person's behavior in terms of its underlying goal. Alternativel...

In this article we offer a new perspective to the study of negative behavioral contagion in organizations. In 3 studies, we investigate the contagion effect of rudeness and the cognitive mechanism that explains this effect. Study 1 results show that low-intensity negative behaviors like rudeness can be contagious, and that this contagion effect can occur based on single episodes, that anybody c...