What is a common critique of laboratory experiments in terms of generalizability?

What is a common critique of laboratory experiments in terms of generalizability?

• A. The conclusions may not generalize to the real world.
• B. They always generalize to the real world.
• C. They cannot show any effects.
• D. They are less controlled than field studies.

Answer: (A)

Generalizability, or external validity, is a common critique of lab experiments. In the lab, researchers control conditions tightly to isolate cause-and-effect relationships, which boosts internal validity. But this high level of control and often non-representative samples can make it hard to apply the findings to real-world settings, populations, or complex contexts. For instance, a study conducted with college students in a quiet lab may not predict how people behave in work environments, in different cultures, or in everyday life. So the main concern is that conclusions drawn in the lab may not transfer neatly to the real world. The other options miss this point: findings from lab studies do not universally generalize to all real-world settings; lab experiments can and do show effects, so they’re not unable to demonstrate anything; and lab studies are typically more, not less, controlled than field studies.

Generalizability, or external validity, is a common critique of lab experiments. In the lab, researchers control conditions tightly to isolate cause-and-effect relationships, which boosts internal validity. But this high level of control and often non-representative samples can make it hard to apply the findings to real-world settings, populations, or complex contexts. For instance, a study conducted with college students in a quiet lab may not predict how people behave in work environments, in different cultures, or in everyday life. So the main concern is that conclusions drawn in the lab may not transfer neatly to the real world.

The other options miss this point: findings from lab studies do not universally generalize to all real-world settings; lab experiments can and do show effects, so they’re not unable to demonstrate anything; and lab studies are typically more, not less, controlled than field studies.