The laboratory experiment is traditionally considered the “gold standard” in psychology research. This is because only laboratory experiments can clearly separate cause from effect and therefore establish causality. Despite this unique strength, it is also clear that a scientific field that is mainly based on controlled laboratory studies ends up lopsided. Specifically, it accumulates a lot of knowledge on what can happen—under carefully isolated and controlled circumstances—but it has little to say about what actually does happen under the circumstances that people actually encounter in their daily lives.
Matthias R. Mehl
Matthias R. Mehl, “Conducting Psychology Research in the Real World,” Open Educational Resource (OER) , accessed October 26, 2020, http://oer.iain-padangsidimpuan.ac.id/items/show/2617.