What is ecological validity?

• A. Ecological validity is the time of day the study is conducted.
• B. Ecological validity is the accuracy of lab equipment.
• C. Ecological validity is the extent findings generalize to real-world settings.
• D. Ecological validity is the sample size of the study.

Answer: (C)

Ecological validity is about how well study findings apply to real-life situations. It asks whether the behavior and outcomes observed in the research would occur in everyday settings with real tasks and real people. If a study uses highly artificial tasks in a lab, its ecological validity is often low because the results may not transfer to the real world. On the other hand, research that mirrors real-world contexts—such as observing how people perform tasks in familiar environments—has higher ecological validity since it better reflects everyday behavior. So the correct idea is that ecological validity measures the extent findings generalize to real-world settings. Other aspects like the time of day, the precision of lab equipment, or the study’s sample size pertain to different concerns (conditions of testing, measurement accuracy, and statistical power) and don’t define ecological validity.