In captivity, male bonnet macaques (Macaca radiata) frequently express "friendship" toward one another, including affiliative behavior such as huddling, grooming, coalitionary support, and sitting in close proximity. The purpose of this study was to determine whether wild adult male bonnet macaques also express "friendship" by investigating whether or not (1) adult male bonnet macaques have aff...

Congenital amusia is a neurodevelopmental disorder characterized by impaired pitch processing. Although pitch simultaneities are among the fundamental building blocks of Western tonal music, affective responses to simultaneities such as isolated dyads varying in consonance/dissonance or chords varying in major/minor quality have rarely been studied in amusic individuals. Thirteen amusics and th...

This paper presents a new corpus, the Personality Dyads Corpus, consisting of multimodal data for three conversations between three personality-matched, two-person dyads (a total of 9 separate dialogues). Participants were selected from a larger sample to be 0.8 of a standard deviation above or below the mean on the Big-Five Personality extraversion scale, to produce an Extravert-Extravert dyad...

Two studies are presented. The first study examined the effects of growing practical experience on expertise in clinical psychology. 85 persons with different amounts of practical experience (novice, intermediate, and advanced students, trainee therapists, and experienced therapists) took part in the study. All participants completed an instrument consisting of a test measuring basic and clinic...

Although negotiating joint action through dialogue can be difficult, dyads may be able to improve collaborative performance by managing communicative efficiency in language production, balancing effort (words per turn) with output (turn-level success). Comparing dyads with high, medium, and low levels of accuracy in communication, growth curve modeling revealed a negative relationship between s...

We investigated whether synchrony at a physiological level (i.e., real-time correspondence of biological indices between two individuals) related to observed levels of dyadic attunement (i.e., levels of connectedness, joint attention, and reciprocity), and whether these measures could distinguish between mother-child dyads with and without clinical levels of externalizing behavioral problems. E...

Responding to pro-social cues plays an important adaptive role in humans. Our aims were (i) to create a catalog of bonding and matched-control pictures to compare the emotional reports of valence and arousal with the International Affective Picture System (IAPS) pictures; (ii) to verify sex influence on the valence and arousal of bonding and matched-control pictures; (iii) to investigate if emp...

In the social and health sciences, data are often structured hierarchically, with individuals nested within groups. Dyads constitute a special case of hierarchically structured data with variation at both the individual and dyadic level. Analyses of data from dyads pose several challenges due to the interdependence between members within dyads and issues related to small group sizes. Multilevel...

This study investigated effects of profound hearing loss on mother-infant interactions before and after cochlear implantation with a focus on maternal synchrony, complexity, and directiveness. Participants included two groups of mother-infant dyads: 9 dyads of mothers and infants with normal hearing; and 9 dyads of hearing mothers and infants with profound hearing loss. Dyads were observed at t...

This article explores the potential of emotional mimicry in identifying leader and follower students collaborative learning settings. Our data include video recorded interactions 24 high school who worked together groups three during a exam. A facial emotions recognition method was used to capture participants’ work. Cross-recurrence quantification analysis applied on detected see level directi...