The quasi-experimental design is a type of experimental research that frequently practices in psychology and science. For the measurement of informative variables, this method is applied. The primary flaw of this method is that it does not determine the validity of data. It consists of qualitative as well as a quantitative analysis but requires randomly allocated assembly and precise control; hence statistical analysis is tough. The quasi-static design does not consider previous factors. Apart from the disadvantages of quasi-experimental design, it is very useful for some situations in which experiments are not possible.