External Validity Essay Example | Topics and Well Written Essays - 500 words

External Validity - Essay Example If the grades of the students seem to improve it cannot directly be concluded that the scheme was the factor which improved the grades. So in order to come up with a perfect conclusion all the external factors are also considered. In order to conduct a research and come up with a perfect solution all the threats to internal validity should be analyzed. If the threats to internal validity are not analyzed and controlled they can and might distort the result or conclusion of the experiment conducted. For e.g. in the above mentioned example other factors can also lead to the improvement of the grades. Other factors like the diet of students, concentration of the students etc. Hence if the researcher concludes that the scheme was the only factor which improved the grades of the students without analyzing other threats or factors he would possibly face several criticism. And his conclusion would not be confirmed until and unless all the factors that can affect the grades of the students a re reviewed. This shows that the threats to the internal validity have a great importance and a conclusion cannot be derived without controlling and analyzing these threats. An experiment is conducted to confirm the cause of a certain state, situation or action. If the threats posed to internal validity are removed a possible conclusion can be derived for the experiment conducted.