Experimental testing is a research method used in scientific studies to evaluate the effects of manipulations or interventions on a specific variable. In this approach, researchers apply a treatment or condition to a group of participants and compare their outcomes to a control group that did not receive the treatment. This allows researchers to determine the causal relationship between the treatment and the outcomes observed. Experimental testing is commonly used in fields such as psychology, biology, and medicine to test hypotheses and gather empirical evidence to support or refute theories.