Previous studies have insufficiently explored the influence of task and interpersonal interdependence on synchronous cooperation behavior. To address this gap, this study utilized fNIRS hyperscanning technique to investigate the behavioral and neural mechanisms within both friend and stranger dyads engaging in various levels of interdependent…

Two experiments are reported: one in which presentation of external information about a stranger evoked significantly higher attraction ratings than available psychological information; and a second where similarity of Subject and Other on external characteristics had greater effects upon attraction scores than did similarity of psychological…

Postcards containing a message either favorable or unfavorable for the recipient, were "lost" in the public transportation systems of Paris, Madrid, London, Geneva, and Frankfurt. More postcards were returned when the message was favorable but only in high importance conditions. This pattern did not occur in Madrid. (Author/BEF)

It was predicted that the amount of satisfaction following an interpersonal exchange will be higher when the resource given is similar to the one reciprocated and lower when they are dissimilar. Interpersonal exchange situations were experimentally created in which two independent variables were manipulated. (Author)

The effects of counter-aggression strategies on married couples resulting from use of the Taylor interactive paradigm were investigated. Married persons (N=52) competed in a complex reaction time task and set durations of 100 decibel punitive noise for either their spouse or an opposite-sex stranger. During pretrials (aggression escalation), males…

Discusses observations of sets of infant twins, aged 6 to 24 months, as they interacted with one another and with an unfamiliar peer. Assesses quality of infant-mother attachment. Finds twins are more likely to react with one another than with a peer. Results are discussed in relation to early peer relationships and attachment. (Author/RWB)