Celebrities are getting $2,000 MRI scans to learn about their health. Should you?
What if there was a way to peer into your body and spot early signs of cancer and other life-threatening ailments before they became serious?
Jul 15, 2024
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What if there was a way to peer into your body and spot early signs of cancer and other life-threatening ailments before they became serious?
Jul 15, 2024
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As Joe Biden's verbal gaffes, shaky voice and other troubling signs have brought an intense focus on the US president's mental acuity, health experts are calling on him and rival Donald Trump to pass additional cognitive ...
Jul 14, 2024
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While some governments have imposed a tax on unhealthy ingredients in processed foods, others have opted for an outright ban. A recent study led by University of Massachusetts Amherst economists sheds new light on how these ...
Jul 11, 2024
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When chemistry professor Samantha Gateman realized there was no non-hormonal intrauterine device (IUD) on the market without significant side effects, she became inspired to make a change.
Jul 5, 2024
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There are renewed calls this week for the Australian government to implement a range of measures aimed at improving our diets. These include restrictions on junk food advertising, improvements to food labeling, and a levy ...
Jul 5, 2024
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LGBTQ+ people involved in farm work are over three times more likely to experience depression and suicidal intent and about two and a half times more likely to experience anxiety than the general population. That's according ...
Jun 27, 2024
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Psilocybin mushrooms are the psychedelic substance most often used in the U.S., with its popularity outpacing other psychedelic drugs such as MDMA (known as ecstasy), according to a new RAND report.
Jun 27, 2024
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Based on focus groups with children and young people with peanut allergy, experts have published guidance for clinicians working in the UK's National Health Service (NHS) to help them safely and equitably implement Palforzia ...
Jun 26, 2024
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Gun violence in the United States has become a national public health crisis, the U.S. Surgeon General declared Tuesday.
Jun 25, 2024
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Body mass index (better known as BMI) has long been used to get a quick and easy snapshot of a person's body fat levels. To calculate someone's BMI, you divide their weight in kilograms by their height in meters times itself. ...
Jun 22, 2024
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An expert ( Audio (US) (help·info), also called cognoscente) is someone widely recognized as a reliable source of technique or skill whose faculty for judging or deciding rightly, justly, or wisely is accorded authority and status by their peers or the public in a specific well-distinguished domain. An expert, more generally, is a person with extensive knowledge or ability based on research, experience, or occupation and in a particular area of study. Experts are called in for advice on their respective subject, but they do not always agree on the particulars of a field of study. An expert can be, by virtue of credential, training, education, profession, publication or experience, believed to have special knowledge of a subject beyond that of the average person, sufficient that others may officially (and legally) rely upon the individual's opinion. Historically, an expert was referred to as a sage (Sophos). The individual was usually a profound thinker distinguished for wisdom and sound judgment.
Experts have a prolonged or intense experience through practice and education in a particular field. In specific fields, the definition of expert is well established by consensus and therefore it is not necessary for an individual to have a professional or academic qualification for them to be accepted as an expert. In this respect, a shepherd with 50 years of experience tending flocks would be widely recognized as having complete expertise in the use and training of sheep dogs and the care of sheep. Another example from computer science is that an expert system may be taught by a human and thereafter considered an expert, often outperforming human beings at particular tasks. In law, an expert witness must be recognized by argument and authority.
Research in this area attempts to understand the relation between expert knowledge and exceptional performance in terms of cognitive structures and processes. The fundamental research endeavor is to describe what it is that experts know and how they use their knowledge to achieve performance that most people assume requires extreme or extraordinary ability. Studies have investigated the factors that enable experts to be fast and accurate.
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