Showing posts from July, 2007

Temperamental differences by race

Excerpted from: Solving The African IQ Conundrum : "Winning Personality" Masks Low Scores
By J. Philippe Rushton
August 12, 2004

Over a century ago, Sir Francis Galton initiated research into individual and race differences in intelligence and temperament. He was the first to propose the study of human twins and of selective breeding in animals to disentangle the effects of heredity and environment. And it was Galton—who spent several years exploring in what is now Namibia as a young man—who first contrasted the talkative impulsivity of Africans with the taciturn reserve of American Indians, and the placidity of the Chinese.

Galton further noted that these temperament differences persisted irrespective of climate (from the frozen north through the torrid equator), and religion, language, or political system (whether self-ruled or governed by the Spanish, Portuguese, English or French).

Anticipating later studies of transracial adoptio…

Evolution Occurs in the Blink of an Eye

By Jeanna Bryner, LiveScience Staff Writer

A population of butterflies has evolved in a flash on a South Pacific
island to fend off a deadly parasite.

The proportion of male Blue Moon butterflies dropped to a precarious 1
percent as the parasite targeted males. Then, within the span of a mere 10
generations, the males evolved an immunity that allowed their population
share to soar to nearly 40 percent-all in less than a year.

"We usually think of natural selection as acting slowly, over hundreds or
thousands of years," said study team member Gregory Hurst, an evolutionary
geneticist at the University College London. "But the example in this study
happened in a blink of the eye, in terms of evolutionary time."

The scientists think the males developed genes that hold a male-killing
microbial parasite, called Wolbachia, at bay.

The results, detailed in the July 13 issue of the journal Science,
illustrate the power of positive natural selection on "suppressor"…

Study finds wives have greater power in marriage problem-solving behavior

Men may still have more power in the workplace, but apparently women really are "the boss" at home. That's according to a new study by a team of Iowa State University researchers.
The study of 72 married couples from Iowa found that wives, on average, exhibit greater situational power -- in the form of domineering and dominant behaviors -- than their husbands during problem-solving discussions, regardless of who raised the topic. All of the couples in the sample were relatively happy in their marriages, with none in counseling at the time of the study.

Associate Professor of Psychology David Vogel and Assistant Professor of Human Development and Family Studies Megan Murphy led the research. The ISU research team also included Associate Professor of Human Development and Family Studies Ronald Werner-Wilson, Professor of Psychology Carolyn Cutrona -- who is director of the Institute for Social and Behavioral Research at Iowa State -- and Joann Seeman, a graduate …