In a newly developed conceptual model of stressful social decision-making, the Stress-Alternatives Model (SAM; used for the 1st time in mice) elicits two types of response: escape or remain submissively. Daily (4d) aggressive social interaction in a neutral arena between a C57BL6/N test mouse and a larger, novel aggressive CD1 mouse, begin after an audible tone (conditioned stimulus; CS). Altho...

We tested whether subordinate helper males of the Lake Tanganyika cooperatively breeding cichlid Neolamprologus pulcher show elevated excretion levels of the stress hormone cortisol and reduced levels of 11-ketotestosterone and testosterone when living in groups with a small breeder male, compared to similar helper males living in groups with a large breeder male, in a full-factorial repeated m...

We evaluated dominance-submissiveness between co-twins and its relationship to mental health in a cohort study of 419 twins followed from pregnancy to 22-30 years of age. Dominance-submissiveness between co-twins was assessed from three separate perspectives: physical dominance, psychological dominance, and verbal dominance. Depressive, nervous, and psychosomatic symptoms were analyzed in diffe...

Here, we describe a biologically relevant model called conditioned defeat that is used to examine behavioral responses to social defeat in Syrian hamsters. In this model experimental animals that are normally aggressive experience social defeat and consequently display high levels of submissive/defensive behavior even in response to non-threatening conspecifics. N-methyl-D-aspartate (NMDA) rece...

Syrian hamsters are highly aggressive animals that reliably defend their home territory. After social defeat, however, hamsters no longer defend their home cage but instead display submissive and defensive behavior toward an intruder, a response that we have termed conditioned defeat. Plasma testosterone is significantly reduced in Syrian hamsters following repeated defeat suggesting that socia...

Dominance hierarchies are common in social mammals, especially primates. The formation of is conducive to solving the problem allocation scarce resources among individuals. From August 2015 July 2016, we observed a wild, provisioned Yunnan snub-nosed monkey ( Rhinopithecus bieti ) group at Xiangguqing Baimaxueshan National Nature Reserve, Province, China. Aggressive and submissive behaviors wer...

We investigate the effect of dominant and submissive movement strategies and a movement cue in a human-robot cooperation scenario on perceived predictability and trust. Four different movement strategies in proximal cooperation between a robot manipulator and a human participant were tested in an experiment in which participants had to arrange small objects in a shared workspace working on the ...

The interpersonal circumplex (IPC) was recommended as a personality trait dimensional model with good potential to identify the phenomenological scope of personality disorders whose core dysfunction involves maladaptive expression of interpersonal traits. The IPC was then applied to the reconceptualization of dependent personality and dependent personality disorder. In Study 1, Pincus and Gurtm...

A study examined the relationship among instructor socio-communicative style, argumentativeness, and verbal aggressiveness in the college classroom. Participants were 139 undergraduate students enrolled at a small southern university who completed the Assertiveness-Responsiveness Measure (Richmond and McCroskey, 1995), as well as modified versions of the Argumentativeness scale (Infante and Ran...

In male golden hamsters, repeated social subjugation during puberty accelerates the development of adult aggressive behavior and enhances its intensity in the presence of smaller individuals. The current study is focused on the characterization of the hormonal and behavioral responses to social subjugation during puberty. Subjugation consisted of daily exposure to an aggressive adult for 20-min...