In online sharing economy platforms, users often need to cooperate with strangers minimal information. When personal photos are available on these how do form social perceptions and consequently cooperative intention? According the stimulus-organism-response (S-O-R) model kin selection theory, authors propose that facial resemblance between two partners affects their of cognitive trustworthines...

Unlike bioethicists who contend that there is a morality common to all, H. Tristan Engelhardt (1996) argues that, in a pluralistic secular society, any morality that does exist is loosely connected, lacks substantive moral content, is based on the principle of permission and, thus, is a morality between moral strangers. This, says Engelhardt, stands in contrast to a substance-full morality that...

Trust as a concept and empirical measure has attracted significant attention in economic theory and research within the last two decades. However, gaps remain in our understanding of what exactly is measured by the different experimental and survey measures of trust, and how they relate to each other. In this paper, we demonstrate that the commonly used trust game captures trust in strangers, b...

Trust as a concept and empirical measure has attracted significant attention in economic theory and research within the last two decades. However, gaps remain in our understanding of what exactly is measured by the different experimental and survey measures of trust, and how they relate to each other. In this paper, we demonstrate that the commonly used trust game captures trust in strangers, b...

In many territorial species androgen hormones are known to increase in response to territorial intrusions as a way to adjust the expression of androgen-dependent behaviour to social challenges. The dear enemy effect has also been described in territorial species and posits that resident individuals show a more aggressive response to intrusions by strangers than by other territorial neighbours. ...

Empathy for another's physical pain has been demonstrated in humans [1] and mice [2]; in both species, empathy is stronger between familiars. Stress levels in stranger dyads are higher than in cagemate dyads or isolated mice [2, 3], suggesting that stress might be responsible for the absence of empathy for the pain of strangers. We show here that blockade of glucocorticoid synthesis or receptor...

The purpose of this study was to examine the hypothesis that 6-week-old infants are capable of coordinated interpersonal timing within social interactions. Coordinated interpersonal timing refers to changes in the timing of one individual's behavior as a function of the timing of another individual's behavior. Each of 45, first-bom 6-week-old infants interacted with his or her mother and a stra...

The 'uncanny valley' response is a phenomenon involving the elicitation of a negative feeling and subsequent avoidant behaviour in human adults and infants as a result of viewing very realistic human-like robots or computer avatars. It is hypothesized that this uncanny feeling occurs because the realistic synthetic characters elicit the concept of 'human' but fail to satisfy it. Such violations...

Research into emotional communication to date has largely focused on facial and vocal expressions. In contrast, recent studies by Hertenstein, Keltner, App, Bulleit, and Jaskolka (2006) and Hertenstein, Holmes, McCullough, and Keltner (2009) exploring nonverbal communication of emotion discovered that people could identify anger, disgust, fear, gratitude, happiness, love, sadness and sympathy f...