An investigator wishes to conduct a double-blind study to determine the effect of an experimental drug on memory. The investigator gives the drug to members of the experimental group and a ____ to members of the control group.

A) demand characteristic
B) random sample
C) placebo
D) mode

Question

Austin Couch · Accepted Answer

Final Answer : C, Explanation :  The investigator would give a placebo to the control group, which is a substance that looks identical to the drug but has no therapeutic effect. This ensures that any changes in memory observed in the experimental group are due to the drug and not other factors such as the placebo effect or demand characteristics. A random sample may be used to select participants for the study, but it is not relevant to the question of what the control group will receive. The mode is a statistical concept and not relevant to experimental design.

An investigator wishes to conduct a double-blind study to determine the effect of an experimental drug on memory. The investigator gives the drug to members of the experimental group and a ____ to members of the control group.

A) demand characteristic
B) random sample
C) placebo
D) mode

Definitions

Learning Objectives

Learning Objectives

Related questions

An investigator wishes to conduct a double-blind study to determine the effect of an experimental drug on memory. The investigator gives the drug to members of the experimental group and a ____ to members of the control group.A) demand characteristicB) random sampleC) placeboD) mode

Definitions

Learning Objectives

Learning Objectives

Related questions

An investigator wishes to conduct a double-blind study to determine the effect of an experimental drug on memory. The investigator gives the drug to members of the experimental group and a ____ to members of the control group.

A) demand characteristic
B) random sample
C) placebo
D) mode