The Post looks back at some of the most audacious missions from the CIA archives which have eventually been revealed to the ...

Over the years, CIA's declassified files have revealed the agency's role in creating fake porn tapes of world leaders, ‘demon ...

"There was speculation all over Stockholm. I couldn't believe it. Who cares?" For a man who has built his reputation on controlled experiments to test market theories in the laboratory, Vernon Smith ...

Learn more here. A field experiment is a research method that uses some controlled elements of traditional lab experiments, but takes place in natural, real-world settings. This type of experiment can ...

In all science experiments variables can be: changed measured, or controlled. It is really important that only one variable is changed and one measured. All others must all be kept the same.

A method is planned so the prediction can be tested. It is sometimes appropriate to setup a control experiment. A control experiment is necessary for comparison purposes and proves that any change ...