What is the group in an experiment that does not receive the treatment called?
AnswerControl group
The control group gives a baseline so researchers can see the effect of the treatment.
Education · Facts & stats
Research facts & stats
7 fact-checked facts about research and the scientific method, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
What is a dummy treatment with no active ingredient, used for comparison, called?
AnswerPlacebo
A placebo looks like the real treatment but has no active effect, so results can be compared fairly.
Going deeper
In an experiment, what is the dependent variable?
AnswerWhat is measured as the outcome
The dependent variable is the result being measured, which may depend on the independent variable.
In a double-blind study, who does not know which participants get the real treatment?
AnswerBoth participants and researchers
Keeping both sides unaware prevents expectations from biasing the results.
Finding that two things happen together does not by itself prove what?
AnswerThat one causes the other
Correlation does not imply causation: a third factor or chance could explain the link.
Expert level
Which society began publishing Philosophical Transactions, a pioneering scientific journal, in 1665?
AnswerThe Royal Society
The Royal Society of London started Philosophical Transactions in 1665.
Philosopher Karl Popper argued that a scientific theory must be what?
AnswerFalsifiable
Popper held that a scientific claim must be testable in a way that could show it to be false.
Know these cold?Today's round is five questions like these, 20 seconds each. Your streak and level follow you to every arena.Play today's round