Research is usually conducted using which method

Experimental method is widely used in research to establish cause-and-effect relationships. In this method; researchers manipulate one variable (independent variable) and observe its effect on another (dependent variable) under controlled conditions. For example; testing whether a new teaching method improves student performance. Experiments may be laboratory-based or field-based. Strengths include high validity and reliability if designed carefully. However; ethical and practical limitations may restrict its use. Experimental research is crucial in education; psychology; medicine; and sciences for generating evidence-based practices.