Abstract The Framingham Heart Study (FHS) was established in 1948 to improve
understanding of the epidemiology of coronary heart disease (CHD) in the USA. In 1961 …

Social relationships promote health and wellbeing. Brain regions regulating social behavior
continue to develop throughout adolescence, as teens learn to navigate their social …

Why should you help a competitor? Why should you contribute to the public good if free
riders reap the benefits of your generosity? Cooperation in a competitive world is a …

Human social networks are overwhelmingly homophilous: individuals tend to befriend
others who are similar to them in terms of a range of physical attributes (eg, age, gender). Do …

Human behaviour is thought to spread through face-to-face social networks, but it is difficult
to identify social influence effects in observational studies,,,,, and it is unknown whether …

Genome-wide association studies have greatly improved our understanding of the genetic
basis of disease risk. The fact that they tend not to identify more than a fraction of the specific …

Here, we review the research we have conducted on social contagion. We describe the
methods we have employed (and the assumptions they have entailed) to examine several …

Social networks show striking structural regularities,, and both theory and evidence suggest
that networks may have facilitated the development of large-scale cooperation in humans …

Human populations are both highly cooperative and highly organized. Human interactions
are not random but rather are structured in social networks. Importantly, ties in these …

This paper focuses on an emergent debate about the microfoundations of organizational
social networks. We consider three theoretical positions: an individual agency perspective …