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Tag: "bias" at biology news

History of human cannibalism eats away at researchers

...trate how SNP ascertainment can introduce a strong bias in population genetics studies and severely affect the conclusions. Bertranpetit and his colleagues point out that at a time when a flood of ascertained SNP data is being generated, it is essential that SNP ascertainment be taken into consideration ...

Just the expectation of a mirthful laughter experience boosts endorphins 27 percent, HGH 87 percent

...es that they can browse, because you don't want to bias what they do or watch. Time and behavior have proved me right with this approach," he added. Earlier experiments showed stress reduction Berk said the results of this "anticipatory mirthful laughter experience, which is a kind of eustress or 'po...

Some people would give life or limb not to be fat

...ing obese. It drives home the message that weight bias is powerful and pervasive," said Marlene Schwartz,...ople" compared with "thin people." Explicit weight bias was assessed by asking people to rate their preferences for thin and fat people, and the degree to w...

Hope I die before I get old?

... driving ability to intelligence, Lacey says. This bias may combine with negative attitudes about aging to help explain the study's findings, she notes. Further analysis of the study data will examine the impact of individuals' core beliefs on their predictions and memory of happiness. Since completing...

Predators prefer to hunt small-brained prey

...tween the brain size of the prey and the predatory bias towards it. Animals with small brains lack behavioural flexibility and are probably less capable of developing new strategies to escape predators, compared with larger-brained species. Dr Shultz said: "When these findings are put into perspect...

Obesity levels in US are grossly underestimated

... the two surveys in order to quantify the level of bias when people self-report their height and weight, especially in a telephone interview. Based on this new understanding of the survey data, the authors found that, on average, women tend to underestimate their weight while men do not. When it comes t...

Older men treated for early prostate cancer live longer than those who are not

...an never completely adjust for potential selection bias and confounding, our results must be validated by rigorous randomized controlled trials of elderly men with localized prostate cancer before the findings can be used to influence treatment decisions." ...

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