introduction: aggressive behavior is a major issue in the field of mental health. pharmacotherapy is often used for the treatment of violent individuals. a neurochemical system most consistently linked with aggression is the gabaergic system. the aim of the present investigation was to examine the effect of muscimol (gabaa agonist) 250 and 500 ng/rat and picrotoxin (gabaa antagonist) 1.5 and 3 ...

atavistic residues of aggressive behavior prevailing in animal life, determined by testosterone, remain attenuated in man and suppressed through familial and social inhibitions. however, it still manifests itself in various intensities and forms from; thoughts, anger, verbal aggressiveness, competition, dominance behavior, to physical violence. testosterone plays a significant role in the arous...

Different test series have been developed and used to measure behaviour in shelter dogs in order to reveal individuals not suitable for re-homing due to their aggressive tendencies. However, behavioural tests previously validated on pet dogs seem to have relatively low predictability in the case of shelter dogs. Here, we investigate the potential effects of (1) timing of the behaviour testing a...

The aim of this study was to examine stability and change in genetic and environmental influences on reactive (impulsive and affective) and proactive (planned and instrumental) aggression from childhood to early adolescence. The sample was drawn from an ongoing longitudinal twin study of risk factors for antisocial behavior at the University of Southern California (USC). The twins were measured...

OBJECTIVE To test the effects of technique and attitude in pulling Christmas crackers. DESIGN, SETTING AND PARTICIPANTS A binomial trial conducted at a Christmas-in-July dinner party involving five anonymous dinner guests, including two of the authors. MAIN OUTCOME MEASURE Number of wins achieved by different strategies, with a win defined as securing the larger portion of the cracker. RE...

The goal of the current study was to examine the moderating role of in-group social identity on relations between youth exposure to sectarian antisocial behavior in the community and aggressive behaviors. Participants included 770 mother-child dyads living in interfaced neighborhoods of Belfast. Youth answered questions about aggressive and delinquent behaviors as well as the extent to which th...

. 3 Conspecific groupings and aggression. Hornbills in the wild perform many bill maintenance behaviors such as cleaning food residue from.Abyssinian Ground Hornbills, 151. See also aggressive behavior behavioral disorders sexual.Rhinoceros Hornbill. Defensive Aggressive behavior: Their long bill is used for defense against enemies. Either as aggression, social interaction, pair bonding, or pla...