aggression

tags: birds, ornithology, Common Raven, Northern Raven, Corvus corax, animal behavior, animal culture, aggression, dominance hierarchy, social groups, social conflict, post-conflict behavior, consolation, empathy, researchblogging.org,peer-reviewed research, journal club Common Raven, Corvus corax, showing off at Bryce Canyon National Park, USA. Image: United States National Park Service (Public Domain) [larger view] Humans have long tried to distinguish themselves from other animals on the basis of characters that are perceived to be unique, such as tool design and use, planning for the…

The video interview above, with NIH primatologist Stephen Suomi, is embedded within a feature of mine that that appeared today at The Atlantic website -- and is in the December 2009 issue now shipping -- about a new hypothesis in behavioral genetics. This emerging hypothesis, which draws on substantial data, much of which has gone simply unnoticed or unremarked, I call the "orchid-gene hypothesis," for lack of a better name. Some of the researchers have other offerings. It's been around for several years but is now blooming as evidence accumulates. When I came across it at a conference this…

Mark Hemingway, the Conservative "tough-guy" for the National Review, has just posted a rant against health concerns for the endocrine disruptor Bisphenol A. I've seen some estimates that over a billion people have had exposure to BPA and there isn't proof of anything. So why the big scare? I assume trial lawyers are involved in the fear mongering. That's a given. But then I saw that last year two reporters from the Milwaukee-Journal Sentinel won a George Polk Award-- a major journalism honor -- for reporting on the "dangers" of BPA. It's another reminder that there are some perverse…

People seem inordinately keen to pit nature and nurture as imagined adversaries, but this naive view glosses over the far more interesting interactions between the two. These interactions between genes and environment lie at the heart of a new study by Rose McDermott from Brown University, which elegantly fuses two of my favourite topics - genetic influences on behaviour and the psychology of punishment. three previous pieces on punishment. Each was based on a study that used clever psychological games to investigate how people behave when they are given a choice to cooperate with, cheat, or…

tags: researchblogging.org, birdsong, personality traits, mate choice, sexual selection, risk taking, European collared flycatcher, Ficedula albicollis, László Zsolt Garamszegi Male European collared flycatcher, Ficedula albicollis, singing. Image: Beijershamn Ãland, 23 May 2004 [link]. Canon EOS 300D Digital Rebel 1/1000s f/8.0 at 400.0mm iso400. Most people don't believe that animals possess distinct personalities, although they readily recognize and can describe individual personalities among their family, friends and neighbors and are aware of the importance of individual…

A fascinating new study published in the Proceedings of the National Academy of Sciences suggests that the impact of human fishing may be reducing the fitness of fish populations overall. It may also explain why your grandfather insists that "the fish don't bite like they used to." The thinking goes like this: bold and aggressive fish tend to eat more, grow faster and ultimately have more baby fish. They also tend to be the ones that chase and bite fishing lures, and in the case of commercial fishing, get caught in gill nets. Aggressive, fast breeding fish are naturally attracted to huge…