This Question Determines Your Entire Research Design
9 May 2026 · 1 min
0:42
In this short instructional video, the presenter explains the core purpose of experimental design: to determine whether variable A causes, impacts, or changes variable B. He emphasizes that experiments are appropriate when the researcher seeks causal inference, distinguishing this from descriptive designs that merely report what is happening and correlational designs that assess relationships without establishing causation. Using a concrete example, he describes providing school lunches to students and measuring the effect on their test scores to illustrate how different conditions can be tested for impact. The video concludes with a call to action, inviting viewers to comment "help" to receive a link to a free dissertation help community.
