If you have ever read a study and wondered, “That worked in the lab — but would it work in real life?” you were asking about external validity. It is one of the most important quality checks in research, and it is the question examiners love to ask about your own study. In this guide, …
If you run an experiment and find a difference between your groups, can you confidently say your treatment caused it? That is exactly the question internal validity answers. It is one of the most important ideas in research design, and examiners love asking about it — because a study with weak internal validity can look …
Demand Characteristics in Research: How to Minimize Participant Bias In psychological and behavioral research, participants’ behaviors and responses can sometimes be influenced by their perceptions of the experiment and the expectations they believe the researcher has. This phenomenon, known as demand characteristics, can lead to biased or inaccurate data, as participants may alter their behavior …