The chief objective in many online communities is to allow for knowledge sharing and learning, which is enabled by technologies such as a discussion forum. The value realized from these communities depends on ongoing participation in terms of two key activities i.e., knowledge seeking and contribution. However, a large number of communities fail as they cannot sustain these activities. This pos...

Sociability promotes a sound daily life for individuals. Reduced sociability is a central symptom of various neuropsychiatric disorders, and yet the neural mechanisms underlying reduced sociability remain unclear. The prelimbic cortex (PL) and infralimbic cortex (IL) have been suggested to play an important role in the neural mechanisms underlying sociability because isolation rearing in rats r...

XXY men (Klinefelter syndrome) are testosterone deficient, socially isolated, exhibit impaired gender identity, and may experience more homosexual behaviors. Here, we characterize social behaviors in a validated XXY mouse model to understand mechanisms. Sociability and gender preference were assessed by three-chambered choice tasks before and after castration and after testosterone replacement....

A wide range of measurements can be made on the collective motion of groups, and the movement of individuals within them. These include, but are not limited to: group size, polarization, speed, turning speed, speed or directional correlations, and distances to near neighbours. From an ecological and evolutionary perspective, we would like to know which of these measurements capture biologically...

Shyness and sociability are two fundamental personality dimensions that are conceptually and empirically orthogonal and are conserved across cultures, development, and phylogeny. However, we know relatively little regarding how shyness and sociability are represented and maintained in the brain. Here we examined neural responses to the processing of different types of social threat using event-...

Previous empirical studies have shown that the personality trait of shyness, either alone or in combination with varying levels of sociability (i.e., a socially-conflicted profile--high shyness with high sociability) to be a reliable predictor of various psychopathologies, including substance abuse and mood disorders. Extending these findings to other forms of dysregulated behaviours, we examin...

Few studies have considered the personal characteristics that may predict the use of Social Networking Sites (SNSs). We examined the prediction of SNS use from distinct personality traits (i.e., sociability and shyness), attitudes toward SNS use, motivations for SNS use and Internet self-efficacy. Participants were 352 Chinese college students who used the QQ zone. Results indicated that sociab...

Mouse models of social dysfunction, designed to investigate the complex genetics of social behaviors, require an objective methodology for scoring social interactions relevant to human disease symptoms. Here we describe an automated, three chambered apparatus designed to monitor social interaction in the mouse. Time spent in each chamber and the number of entries are scored automatically by a s...

Behaviors toward heterospecifics and conspecifics may be correlated because of shared mechanisms of expression in both social contexts (nonadaptive covariation) or because correlational selection favors adaptive covariation. We evaluated these hypotheses by comparing behavior toward conspecifics and heterospecifics in brook stickleback (Culaea inconstans) from three populations sympatric with a...

the research compares 5-12 year old children of addicted fathers with those of non-addicted fathers. this experiment was carried out on one hundred families of the addict, in comparison to another one hundred non-addicted families. these children have not been subjects for social scientists and health experts because of the following facts: 1) they live with their parents, 2) they are not crimi...