ABSTRACT
Review of existing literature is an essential step before beginning any new research. Systematic reviews (SRs) synthesize the existing research work in such a manner that can be analyzed, assessed, and interpreted to draw meaningful conclusions. The aim of conducting an SR is to gather and interpret empirical evidence from the available research with respect to formed research questions. The benefit of conducting an SR is to summarize the existing trends in the available research, identify gaps in the current research, and provide future guidelines for conducting new research. The SRs also provide empirical evidence in support or opposition of a given hypothesis. Hence, the author of the SR must make all the efforts to provide evidence that support or does not support a given research hypothesis.
