Tag Archives: iq

Ursachen für das Ende des IQ-Höhenflugs

Die Intelligenztestleistung der Allgemeinbevölkerung ist über einen Großteil des vergangenen Jahrhunderts kontinuierlich angestiegen. Zahlreiche Untersuchungen in jüngerer Zeit liefern jedoch Hinweise auf ein Ende und sogar eine Umkehr dieses sogenannten Flynn Effekts. (more…)

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Ein großes Gehirn ist kein Garant für Intelligenz

Gehirnstruktur wichtiger als Größe

Hat die Größe des Gehirns etwas mit der kognitiven Leistungsfähigkeit von Menschen zu tun? Diese Frage fasziniert WissenschafterInnen bereits seit mehr als hundert Jahren. Ein internationales Team von Psychologen der Universitäten Wien, Göttingen (Deutschland) und Tilburg (Niederlande) liefert nun Erkenntnisse zur Rolle der Größe des Zentralnervensystems für Intelligenztestleistungen. Im Rahmen einer Meta-Analyse der Daten von über 8.000 Testpersonen zeigten die Forscher, dass die Größe des Gehirns für IQ-Testleistungen nur eine untergeordnete Rolle spielt.

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Poor concentration: Poverty reduces brainpower needed for navigating other areas of life

Poverty and all its related concerns require so much mental energy that the poor have less remaining brainpower to devote to other areas of life, according to research based at Princeton University. As a result, people of limited means are more likely to make mistakes and bad decisions that may be amplified by — and perpetuate — their financial woes.

Published in the journal Science, the study presents a unique perspective regarding the causes of persistent poverty. The researchers suggest that being poor may keep a person from concentrating on the very avenues that would lead them out of poverty. A person’s cognitive function is diminished by the constant and all-consuming effort of coping with the immediate effects of having little money, such as scrounging to pay bills and cut costs. Thusly, a person is left with fewer “mental resources” to focus on complicated, indirectly related matters such as education, job training and even managing their time. (more…)

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Raising the IQ of Smart Windows

Researchers at the U.S. Department of Energy’s Lawrence Berkeley National Laboratory (Berkeley Lab) have designed a new material to make smart windows even smarter. The material is a thin coating of nanocrystals embedded in glass that can dynamically modify sunlight as it passes through a window. Unlike existing technologies, the coating provides selective control over visible light and heat-producing near-infrared (NIR) light, so windows can maximize both energy savings and occupant comfort in a wide range of climates.

“In the US, we spend about a quarter of our total energy on lighting, heating and cooling our buildings,” says Delia Milliron, a chemist at Berkeley Lab’s Molecular Foundry who led this research. “When used as a window coating, our new material can have a major impact on building energy efficiency.” (more…)

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Are the Wealthiest Countries the Smartest Countries?

It’s not just how free the market is. Some economists are looking at another factor that determines how much a country’s economy flourishes: how smart its people are. For a study published in an upcoming issue of Psychological Science, a journal of the Association for Psychological Science, researchers analyzed test scores from 90 countries and found that the intelligence of the people, particularly the smartest 5 percent, made a big contribution to the strength of their economies.

In the last 50 years or so, economists have started taking an interest in the value of human capital. That means all of the qualities of the people who make up the workforce. Heiner Rindermann, of the Chemnitz University of Technology, wanted to look more closely at human capital, and particularly the factor that psychologists call cognitive ability. “In other words, it’s the ability of a person to solve a problem in the most efficient way—not with violence, but by thinking,” Rindermann says. He wrote the new study with James Thompson of University College London. (more…)

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