Problems in species recognition are thought to affect the evolution of secondary sexual characters mainly through avoidance of maladaptive hybridization. Another, but much less studied avenue for the evolution of sexual characters due to species recognition problems is through interspecific aggression. In the damselfly, Calopteryx splendens, males have pigmented wing spots as a sexual character...

Anger is commonly associated with aggression. Inefficient anger-coping strategies increase negative affect and deplete the regulatory resources needed to control aggressive impulses. Factors linked with better emotion regulation may then weaken the relationship between anger and aggression. The current work explored one factor associated with emotion regulation-differentiating one's emotions in...

Purpose: Depression causes dysfunction in various spheres of individual and social life, which is now considered as the fourth-leading cause of the global disease burden. Given that violence and aggression associated with depression in the community cause serious damage to the family, the prediction, early detection and effective treatment of aggressive and violent behavior are essential. The p...

Theorists and clinicians are not always clear in distinguishing anger from hostility and aggression, sometimes using the terms interchangeably. Given the confusion that prevails in much of the literature, Thomas (1993c) maintains the importance of establishing such distinctions. Thomas defines anger as "a strong feeling of distress or displeasure in response to a specific provocation of some ki...

The three preceding chapters provide distinct yet overlapping perspectives on the relation between anger and aggression in children and adolescents. To integrate these perspectives, we divide this commentary into three broad sections designed to follow the overarching themes of this edited volume. In the first section, we focus on the relation between aggression and emotion in children and adol...

Iraq and Afghanistan War veterans were grouped by level of posttraumatic stress disorder (PTSD) symptomatology and compared on self-report measures of trait anger, hostility, and aggression. Veterans who screened positive for PTSD reported significantly greater anger and hostility than those in the subthreshold-PTSD and non-PTSD groups. Veterans in the subthreshold-PTSD group reported significa...

Recent evidence suggests that anger and aggression are of concern even during remission for persons with bipolar I disorder, although there is substantial variability in the degree of anger and aggression across individuals. Little research is available to examine psychological models of anger and aggression for those with remitted bipolar disorder, and that was the goal of this study. Particip...