What is the primary advantage of human laboratory studies?

A) Reliability
B) Validity
C) Participants
D) Control

The primary advantage of human laboratory studies is control. In laboratory studies, researchers can control variables such as lighting, temperature, and noise levels, which in turn decreases extraneous variables that can affect the dependent variable. This allows for higher internal validity, as the researcher can be more confident that any changes in the dependent variable are truly due to the manipulation of the independent variable. Furthermore, control also allows researchers to replicate results and ensure that findings are reliable. The other answer choices (reliability, validity, and participants) are important factors in research, but they are not specific advantages of human laboratory studies.