The next step in experimental method is the formulation of a hypothesis that Strict supervision may lead to less copying in the examination as compared to the relaxed supervision. This hypothesis is now to be tested by experiment. 3. Making a distinction between Independent and dependent variables: In the example given above the cheating behaviour of the students will be dependent variable while the nature of supervision will be the independent variable. It is because by changing the supervision the cheating behaviour is expected change. In the present experiment we manipulate the conditions of supervision in order to discover the ways in which they determine the dependent variable that is the cheating behaviour. We may observe the effect of supervision in the experimental situation and also the effect of relaxed supervision under similar conditions and with the same group of students.