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Stress relief for bullies
At last! An excuse for those of us who take our work-related stress out on our family. Dr. Øyvind Øverli of the University of Oslo has discovered that dominant rainbow trout reduce their stress levels by venting their frustration on socially subordinate animals. Presenting his results at the... view more (2004-03-24)

Ritualized submission and pseudo-copulation reduce aggression among male crayfish
Pseudo-copulation-an interaction that mimics sexual copulation-is a behavior known in mammalian communities that reduces aggression and signifies social dominance, particularly among males.   view more (2006-11-21)

Yerkes researchers find link between psychological stress and overeating
Researchers at the Yerkes National Primate Research Center, Emory University, have found socially subordinate female rhesus macaques over consume calorie-rich foods at a significantly higher level than do dominant females.   view more (2008-05-14)

Environmental enrichment can reduce cocaine use, researchers find
Simple environmental enrichment and increased social stress can both affect the level of individual drug use, according to new monkey research at Wake Forest University School of Medicine.   view more (2008-04-07)

Subordinate monkeys more likely to choose cocaine over food
Having a lower social standing increases the likelihood that a monkey faced with a stressful situation will choose cocaine over food, according to a study at Wake Forest University School of Medicine. More dominant monkeys undergoing the same stressful situation had fewer changes in brain activity... view more (2008-04-07)

Who knew he was the alpha male?
How do you know if a stranger will be nice or nasty? Professor Cliff Summers' group at the University of South Dakota has found that you can predict the social status of male lizards before they fight. What is more, green Anolis lizards show their fighting fitness through a colour signal on their... view more (2004-03-25)

Man's best friend lends insight into human evolution
Flexibly drawing inferences about the intentions of other individuals in order to cooperate in complex tasks is a basic part of everyday life that we humans take for granted.   view more (2007-03-02)

If you want more babies, find a man with a deep voice
Men who have lower-pitched voices have more children than do men with high-pitched voices, researchers have found. And their study suggests that for reproductive-minded women, mate selection favours men with low-pitched voices.   view more (2007-09-25)

Study explores plant phenotypic plasticity belowground
When we think of organisms actively searching for resources (foraging) we generally think of things like wolves stalking elk or butterflies finding flowers. Why don't we also think about plants growing roots through the soil?   view more (2005-07-27)

Ancient tomb sheds new light on Egyptian colonialism
In approximately 1550 B.C., Egypt conquered its southern neighbor, ancient Nubia, and secured control of valuable trade routes.   view more (2006-05-18)

Gynaecologists Could Have Important Role In Identifying Sexual Abuse In Their Patients (p 2107)
European research in this week's issue of THE LANCET highlights how gynaecologists could have an important role in identifying women who have experienced sexual, physical, and emotional abuse. A positive dialogue between gynaecologists and their patients could ensure that abused women do not... view more (2003-06-19)

oxoplasma Infection Increases Risk of Schizophrenia, Study Suggests
Findings from what is believed to be the largest comparison of blood samples collected from healthy individuals and people with schizophrenia suggest that infection with the common Toxoplasma gondii parasite, carried by cats and farm animals, may increase the risk of schizophrenia.   view more (2008-01-17)

Brain, behavior may have changed as social insect colonies evolved
A new study suggests that brain and behavior relationships may have changed in a profound way as larger, more complex insect societies evolved from smaller, simpler ones.   view more (2006-11-16)

Relocation of Production Abroad Drops for First Time
The wave of German companies relocating production activities to foreign countries appears to have crested. For the first time since 1995 the Fraunhofer Institute for Systems and Innovation Research ISI, Karlsruhe, has identified a decline from 30 percent to 21 percent. At the same time the number... view more (2003-02-06)

Which came first, social dominance or big brains? Wasps may tell
There's new evidence supporting the idea that bigger brains are better. A study of a tropical wasp suggests that the brainpower required to be dominant drives brain capacity.   view more (2008-03-12)

Anti-HIV drug has potential to prevent transmission in women
A new study from infectious disease researchers at The Miriam Hospital and Brown Medical School finds that a drug already given orally to treat HIV is also safe when applied as a vaginal microbicide gel.   view more (2006-02-10)

Experimental vaccine protects nonhuman primates from Lassa fever
A team of U.S. and Canadian scientists has developed a vaccine against Lassa fever that fully protects nonhuman primates from experimental infection with lethal doses of Lassa virus.   view more (2005-06-28)

Social standing influences elephant movement
When resources are scarce, who you know and where you're positioned on the social totem pole affects how far you'll go to search for food. At least that's the case with African elephants, according to a study led by ecologists at the University of California, Berkeley, who collaborated with... view more (2007-10-30)
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