An experimental research design allows the researcher to control the situation by manipulating the independent variable while holding other variables constant. This control enables the researcher to isolate the specific cause of an effect and answer the question, "What causes something to occur?"

. By controlling extraneous factors and using control groups, the researcher can establish a valid cause-and-effect relationship between variables. The control group serves as a baseline, allowing comparison to determine whether observed effects are due to the experimental treatment or other influences

. This control minimizes biases and confounding variables, ensuring the results are reliable and valid

. In summary, experimental research design's key strength is its ability to provide clear evidence of causality by controlling the situation, manipulating variables, and using control groups to isolate the effects of the independent variable on the dependent variable