OBJECTIVE To examine whether kindergarten children's genetic liability to physically aggress moderates the contribution of friends' aggression to their aggressive behaviors. METHOD Teacher and peer reports of aggression were available for 359 6-year-old twin pairs (145 MZ, 212 DZ) as well as teacher and peer reports of aggression of the two best friends of each twin. Children's genetic risk f...

Half a century a.d., Pliny the Elder prescribed exposure to the sun and residence in the neighbourhood of pine forests for those afflicted with consumption. In 1840, an English country practitioner, Dr. Bodington, of Sutton Coldfield, advocated and carried out the very treatment of consumption which to-day is looked upon as the best, the most common-sense, and most hopeful mode of helping forwa...

Impulsive and aggressive behaviour symptoms often are serious problems in children, even already at preschool age. Thus, effective treatment approaches are requested. In this comment pharmacotherapeutic treatment approaches, first of all risperidone, their limitations and alternative psychotherapeutic approaches are outlined.

introduction the commercial egg industry commonly uses induced molt procedures to rejuvenate flocks for a second or third laying cycle. molting may be induced by feed withdrawal for up to 10 days (7), water withdrawal for 2 days (19), or both, along with a reduction of day length (14). such programs cause concern about animal welfare because it is thought that they may be harmful to hens (28). ...

Scholars have become increasingly interested in how social environments condition the relationships between individual risk-factors and adolescent behavior. An appreciable portion of this literature is concerned with the relationship between impulsivity and delinquency across neighborhood settings. The present article builds upon this growing body of research by considering the more nuanced pat...

Committing violent acts can be appealing, fascinating, exciting, and addictive (i.e., appetitive). Cultural settings that accept violence as a means to power and success promote this appetitive form of aggression. Former child soldiers of Uganda with military rank reported committing a greater variety of violent acts compared to those without rank. They experienced aggressive behavior as more p...

Individual differences in reward-drive have been associated with increased attention toward facial signals of aggression, heightened experience of anger and vulnerability to display aggressive behaviour. Recent fMRI research suggests that these effects rely on reduced ventromedial prefrontal (and increased amygdala) response to aggressive facial displays compared with neutral and sad expression...