Examlex
The signaling theory of education suggests that when people earn a college degree they do not become more productive, but they do signal their high ability to prospective employers.
Placebo
A substance or treatment with no therapeutic effect, often used as a control in testing new drugs.
Nocebo
A detrimental health effect resulting from the negative expectations of the patient towards a treatment or medication.
Dependent Variable
In an experiment or clinical trial, the variable that represents the effect or outcome of interest.
Physical Age
A measure of how old a person is in years, as opposed to biological or psychological age, which may differ based on health or mental state.
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