More recently, Lummaa and her colleagues have been studying how sons are not just tough on their mothers but also hard on their siblings. Those born after a son were physically slighter, had smaller families and generally had a greater chance of dying from an infectious disease. The effects held up whether the elder brother died in childhood or not, suggesting that the negative outcome is not a result of some direct sibling interaction, such as competition for food, regular beatings or the practice of primogeniture, in which the eldest brother inherits everything. “Big brothers are bad for you,” Lummaa explains. “If the fifth-born was a male, then the sixth-born is doing worse.” [More]

Labels: culture, family, fun

There's no news like bad news. The tabloids are full of accidents, gory murders, and mayhem, and people eat it up. But there may be a silver lining, at least for seniors. A new study finds that the human brain reacts less strongly to emotionally negative stimuli as we age, in effect making us more responsive to all things positive and less responsive to the dark and dismal. This bolsters a growing body of evidence showing that aging changes how the brain reacts to emotional stimuli. [More]

Labels: culture, family, succession

Labels: culture, family

Labels: family, fun

Labels: family, fun