In field experiments, researchers __________.
A. selectively assign participants to treatment conditions in natural settings
B. cannot use random assignment or manipulate treatment conditions
C. assign participants randomly to treatment conditions in natural settings
D. have stronger control over the treatment than in the laboratory
Answer:C
In field experiments, researchers __________.
A. selectively assign participants to treatment conditions in natural settings B. cannot use random assignment or manipulate treatment conditions C. assign participants randomly to treatment conditions in natural settings D. have stronger control over the treatment than in the laboratory