Experimental method suffers from various following demerits 1. Experimental method is costly and time consuming method as it requires a laboratory and apparatus to conduct it properly. 2. Experiments are conducted in artificially determined pattern of behaviour. In real life situation it is quite different. 3. It needs specialized knowledge and therefore every teacher cannot be expected to conduct the experiment. 4. The scope is limited. All problems of psychology cannot be studied by this method as we cannot perform experiments for all the problems that may come up in the diverse subject matter of psychology. 5. Accurate measurements in case of human beings are never possible. 6. It is difficult to always control the independent variable therefore it is not possible to create desired conditions in laboratory. 7. It is not possible to reach certainty in matters of social sciences including educational psychology.