Hypothesis
hideA hypothesis (from Greek ὑπόθεσις [iˈpoθesis]) consists either of a suggested explanation for an observable phenomenon or of a reasoned proposal predicting a possible causal correlation among multiple phenomena. The term derives from the Greek, hypotithenai meaning "to put under" or "to suppose." The scientific method requires that one can test a scientific hypothesis. Scientists generally base such hypotheses on previous observations or on extensions of scientific theories. Even though the words "hypothesis" and "theory" are often used synonymously in common and informal usage, a scientific hypothesis is not the same as a scientific theory. A hypothesis is never to be stated as a question, but always as a statement with an explanation following it. It is not to be a question because it states what the experimenter thinks will occur. Hypotheses are usually written in the "if-then form": If X, then Y.
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News tagged with hypothesis
Biology, training and profit sharing make best traders
4 hours ago |
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(PhysOrg.com) -- Cambridge researchers have identified a group of traders consistently able to outperform the market, even during the credit crisis.
Putting math problems in proper order
Nov 17, 2009 |
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Mathematics is driven by the quest to solve problems and today the American Institute of Mathematics (AIM) announces a new tool to help attack those questions. Research problems can take decades or centuries to answer, with ...
Humans, Other Mammals Similarly Voice Frustrations
Nov 05, 2009 |
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Pet owners and scientists who spend a lot of time in the wild say that they can tell when an animal is upset by the sound of its voice. Now new analyses of animal calls may offer an explanation; humans seem ...
Where do nanomaterials go in the body?
Nanotechnology / Bio & Medicine
Nov 02, 2009 |
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Tiny, engineered nanomaterials can already be found in many consumer products, and have been hailed as having widespread future uses in areas ranging from medicine to industrial processes. However, little is known about what ...
The importance of grandmothers in the lives of their grandchildren
Oct 29, 2009 |
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(PhysOrg.com) -- It is widely believed that women live long post-reproductive lives to help care for their grandchildren. According to the "Grandmother Hypothesis," post-menopausal women can increase their ...
Scientists link fat hormone to death from potentially deadly blood infection
Oct 23, 2009 |
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A new Canadian study has found that lower-than-normal levels of a naturally-occurring fat hormone may increase the risk of death from sepsis—an overwhelming infection of the blood which claims thousands of lives each year.
Why solitary reptiles lay eggs in communal nests
Sep 03, 2009 |
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Reptiles are not known to be the most social of creatures. But when it comes to laying eggs, female reptiles can be remarkably communal, often laying their eggs in the nests of other females. New research in the September ...
Diabetes gene raises odds of lower birth weight
Jul 29, 2009 |
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Pediatric researchers have found that a gene previously shown to be involved in the development of type 2 diabetes also predisposes children to having a lower birth weight. The finding sheds light on a possible genetic influence ...
Galileo's notebooks may reveal secrets of new planet
Jul 09, 2009 |
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Galileo knew he had discovered a new planet in 1613, 234 years before its official discovery date, according to a new theory by a University of Melbourne physicist.
Scientists reveal connection between cancer and human evolution
Jul 02, 2009 |
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Researchers at Ben-Gurion University of the Negev (BGU) have discovered that gene mutations that once helped humans survive may increase the possibility for diseases, including cancer.
Ability to literally imagine oneself in another's shoes may be tied to empathy
Medicine & Health / Psychology & Psychiatry
Jun 23, 2009 |
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New research from Vanderbilt University indicates the way our brain handles how we move through space -- including being able to imagine literally stepping into someone else's shoes -- may be related to how ...
Be your best friend if you'll be mine: Alliance Hypothesis for Human Friendship
Medicine & Health / Psychology & Psychiatry
Jun 03, 2009 |
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University of Pennsylvania psychologists studying the cognitive mechanisms behind human friendship have determined that how you rank your best friends is closely related to how you think your friends rank you. The results ...
Scientists: No link cloud coverage and global warming
Space & Earth / Earth Sciences
May 11, 2009 |
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With the U.S. Congress beginning to consider regulations on greenhouse gases, a troubling hypothesis about how the sun may impact global warming is finally laid to rest.
Massage after exercise myth busted
May 07, 2009 |
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A Queen's University research team has blown open the myth that massage after exercise improves circulation to the muscle and assists in the removal of lactic acid and other waste products.
Cooperative forces boost collective mobility of cells
May 06, 2009 |
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An article by Dr. Xavier Trepat, senior researcher of the Cellular and respiratory biomechanics group at the University of Barcelona, Spain, contributes for the first time an experimental answer to the question ...
