What are REPEATED MEASURES, INDEPENDENT GROUPS and MATCHED PAIRS? Experimental Design in Psychology

The video discusses three common experimental designs in psychology: repeated measures, independent groups, and matched pairs. It explains the importance of controlling confounding variables to ensure high internal validity. Repeated measures involve the same participants in all conditions, which can lead to order effects like practice and fatigue. Independent groups use different participants for each condition, requiring more participants but reducing the chance of guessing the study's aims. Matched pairs involve pairing participants with similar characteristics, which is labor-intensive but controls participant variables more tightly. The video concludes by encouraging viewers to consider different designs for their experiments.

How can researchers control for participant variables in independent groups design?

What are matched pairs designs, and why are they considered labor-intensive?

Discuss the limitations of using matched pairs design in experiments.