Examlex
The average lifetime of an artificial beach is how many years?
Placebo Effect
A psychological phenomenon where patients experience real improvements in their condition after receiving a treatment with no therapeutic value, simply because they believe it is effective.
Participants' Expectations
Refers to the beliefs or assumptions held by individuals participating in a study about what will happen to them or what they are supposed to do, which can influence the outcomes of research.
Single-blind Study
A research experimental design in which the participants do not know which group (experimental or control) they are in, to prevent bias, while the researchers do.
Experimental Group
the group in an experiment that receives the treatment or intervention being tested.
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