To conduct a randomized experiment, researchers usually classify the participants into a:
A) study group and a control group.
B) treatment group and a test group.
C) study group and a treatment group.
D) treatment group and a control group.
Question 2
If the Fed purchases government bonds, it
A) decreases bank reserves and the supply of money.
B) decreases bank reserves but increases the supply of money.
C) increases bank reserves and the supply of money.
D) increases bank reserves but decreases the supply of money.
Chuckwalla body lengths at the end of a laboratory rearing experiment
Orifice plate & Turbine Flowmeter Experiment
A participant in a sleep experiment.
Landsteiner's experiment demonstrating the exquisite specificity of the immune system.
The Experiment at Robbers Cave
The Taylor–Woods–Hughes experiment