It is a common practice to write literature reviews on books that you read. (writemypaperhub.com)
I think it's really easy to get lost in literature reviews and statistical analysis as a PhD student and lose focus on what you are actually studying and why it is important. (science.sciencemag.org)
A further systematic literature review published in 2013 found only six prospective studies that encouraged further study of decline across the spectrum of cognition. (coffeeandhealth.org)