The use of placebos in research is an attempt to minimize the effects of

A) dependent variables.
B) case histories.
C) experimenter bias.
D) informed consent.

Placebos

Inactive substances or treatments used in controlled experiments to test the effectiveness of another substance or treatment.

Experimenter Bias

A process where the scientists conducting an experiment inadvertently influence the results, affecting the validity of the data collected.

Dependent Variables

In scientific research, the variable being tested and measured, expected to change in response to variations in the independent variable.