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If you are looking at a clinical trial, a psychology study, or an animal study, it must be a randomized, placebo-controlled, double-blind study.
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In science, "statistically significant" is the effect that can be picked up with a particular statistical tool called a p-value. A good p-value (or calculated probability) is arbitrary and can vary between scientific fields. The cut-off for statistically significant is a p-value ...
The world is full of evidence and studies, some good and some poor.
A hypothesis is often the first step of the scientific method. It is a proposed and still-unproven explanation that can be tested through experiments and observations.
In science, a theory is a widely accepted idea backed by data, observ...
In a peer review system, independent, anonymous experts read over a paper submitted to a journal. They can recommend revisions to the text, new experiments that should be added, or even that the journal shouldn't publish the paper.
But reviewers aren't asked to ensure that...
Studies can suffer from selection bias when people are recruited from a specific group that are not representative of the whole. Scientists select a smaller group to study, but the chosen set isn't random enough and is therefore somehow biased in favor of a specific outcome of th...
One type of conflict of interest is financial. It could be someone who received funding from a company with a vested interest in the study's outcome. Or that person has a relationship with the company that could lead to benefits in the future.
A recent analysis found t...
A lot of problems would disappear if we talked to each other more than talking about each other.
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Placebos are often used in clinical drug trials to determine how well a potential medicine will work.
The American Medical Association created a policy concerning placebos that states that "physicians may use placebos for diagnosis or treatment only if the patient is informed of and agrees to its use."
When people know what the result of taking a pill is supposed to be, they might unconsciously change their reaction to cause that result or report that result has taken place even if it hasn't.
However, studies show that a placebo doesn't trick the brain - the brain reacts differently to ...
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