Studies and Analyses

Dogs’ ability to discriminate brightness is about half as good as that of humans, according to a study appearing in Volume 4, Issue 3 in the Journal of Vision. In research conducted by scientists from the Veterinary University of Vienna and the University of Memphis, dogs showed a surprising lack of ability to discriminate between grey cards that varied in brightness, says researcher Ulrike Griebel of the University of Memphis.

While a great deal is known about dogs’ visual acuity

Choosing a diet soft drink over a regular, sugar-packed beverage may not be the best way to fight obesity, according to new research from Purdue University. But the researchers said this doesn’t mean you should grab a regularly sweetened soft drink instead.

Professor Terry Davidson and associate professor Susan Swithers, both in the Department of Psychological Sciences, found that artificial sweeteners may disrupt the body’s natural ability to “count” calories based on foods&#14

Teenage girls who have never smoked, never even puffed on a cigarette, are far more likely to start smoking if their favorite movie star smokes in movies, according to a 3-year study published in the July issue of the American Journal of Public Health, the most-cited public health journal.

The study’s authors conclude that on-screen smoking by popular actors is undermining public health efforts to keep children from smoking.

“We’ve heard for years that big-screen movies influence k

When a fly drops in to sample your picnic lunch, it’s basically tasting the same thing you taste, according to a new study by University of California, Berkeley, scientists.

In the first detailed genetic study of fly taste receptors, UC Berkeley neuroscientist Kristin Scott and her colleagues showed that fruit flies have receptors devoted to sweet and bitter tastes just like humans. While human taste receptors are limited to the tongue, the receptors in flies are mounted on bristles sc

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Current legislation on preimplantation genetic diagnosis (PGD) in Germany is out of step with the attitudes of Germans and should be changed, researchers told a news briefing at the 20th annual meeting of the European Society of Human Reproduction and Embryology on Monday 28 June).

At present PGD is forbidden in Germany, but in one of the first large study of attitudes to PGD amongst the general population and infertile couples in Germany, the researchers found that the majority of Ge