Brain functional connectivity shows a neurobiological predisposition to social bonding, and network-wide changes occur as a result of cohabitation in the prairie vole.

Social connectivity increases an individual’s likelihood of behavioural adoption if the learning rule depends on the extent of social connections to informed others, but is unrelated when learning depends on the ratio of connections to informed versus uninformed others.

The brain network associated with social interaction observation involves large part of the frontal cortex and parietal areas in marmosets.

The subjective value of engaging in human social situations, and amygdala and nucleus accumbens activation and their connectivity during social decision-making, vary with social anxiety traits.

Toddlers with autism spectrum disorders have alterations in gaze patterns together with frequency specific network atypicalities between key brain areas of the social brain when freely exploring naturalistic and ecologically valid dynamic social stimuli.

Social interactions can have a direct effect on the composition of the gut microbiome in wild primates.

Functional hypoconnectivity between ‘social brain’ default mode circuitry and visual association cortex underpins a subtype of autistic toddlers with a strong preference to attend to the non-social visual world.

Beyond well-recognized individual-level risk factors, HIV and hepatitis C transmission among people who inject drugs are further impacted by social and spatial network composition, and spaces in particular may represent efficient means for disseminating interventions that diffuse through the network.

Variations in the frequency of theta brain waves enable a single network of brain regions to generate appropriate responses to stimuli with different kinds of emotional value.

A new way of measuring sociality in human and animal contact networks reveals the link between social behavior, population density, and disease transmission.