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…

Supports the hypothesis that temperamentally fussier 5- to 9-month-old infants are more fearful and less friendly toward strangers than are more easygoing infants of the same age. (MP)

Some research has found that observers believe overt mimicry is socially unacceptable and embarrassing in the presence of a stranger. It was hypothesized that observers would inhibit their mimicry of learned pairs of gestures in the presence of a stranger, and that their learning would be adversely affected unless they compensated for the…

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…

This study identifies elements in the attachment behaviors of 7-month infants which predict the quality of their attachment to their mothers at 13 months. At 7 months 147 infants were observed (and videotaped) during a free play period with their mothers present, during a separation from their mothers and then during a reunion period. At 13 months…

In this study a male experimenter's style of dress had significant influence upon the number of agreements from older and younger women to answer the interviewer's questions and no influence upon men. Older individuals were more influenced by clothing than were younger ones. Results are discussed. (Author)

This study examined the differential effects of sex of parent, sex of child, and sex of stranger on infant behavior in a stranger-separation situation. Year-old infants (16 males and 19 females) from middle-class families were observed and videotaped twice, at one-week intervals, in a modification of Ainsworth's laboratory stranger and separation…

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)

The responses of 18 Down's syndrome infants in a modified "strange" situation were recorded. The results indicated that these infants were aware of the exits and entrances of both mother and stranger. (Author)

Theories and descriptions of various infant fear behaviors are presented in this paper. Five examples of fear are given: (1) learned fear, in which the infant associates some unpleasant action with an agent, (2) unlearned fear, in which the infant experiences an intense sensory phenomena such as a loud noise, (3) stranger anxiety, (4) fear caused…

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)

This study compares interactions between infants and parents to interactions between infants and strangers. Infants from 2 weeks to 6 months of age were taped in face-to-face interactions with unfamiliar male and female adults. Tapes of parent-infant interactions were available from a prior study. Specific infant and adult behaviors were coded and…

This study applied Meehl's taxometric techniques for distinguishing latent types from late continua to Strange Situation data on 1,139 fifteen-month-olds from the NICHD Study of Early Child Care. Results indicated that variation in attachment patterns was largely continuous, not categorical. Implications of dimensional models for individual…