Influence of the researcher The study does not address the potential influence of researchers on the study and the research process. This is because researchers can influence the study and hence affect the interpretation of the study results. For instance, the study does not state if there is any relationship between researchers and the study participants. Moreover, the likely influence of researchers on data collection has not been tackled too (Bassett & Bissett, 2003). Ethical approval The study does not indicate if ethical approval was sought from the suitable body.
This was erroneous because every study necessitates ethical approval from the appropriate authority. Moreover, there is no indication of whether informed consent was sought from the study participants. (Coughian et al, 2007). Relationship of conclusions to analysis In this study, there is a relationship between the study findings and the views of the study participants. This is because the study findings clearly represent the views of the participants and hence the data interpretation represents the participants’ views (Coughian et al, 2007).
Parks M & Rose D, The Arts and Academic Achievement: What the Evidence Does (and Doesn't) Show In this study, the researchers used a systematic review methodology whereby 20 articles that had summary of findings from more than 250 studies. All the articles used in this study utilized meta-analysis methodology that combines findings of comparable research studies with an aim of drawing conclusions basing on large group of studies. Methodology appraisal The review question was clearly stated The review question for this study was explicitly stated and it was “what evidence does and does not show?
” This question is well articulated and defines the scale of the study review. As a result, the question helped in developing the search strategy to locate the pertinent evidence for the study. However, the research question was not formulated around its PICO and hence it might have been difficult for readers to establish whether the review attained its study objectives (Ham-Baloyi, 2016). Appropriateness of the search strategy The study review provided a search strategy that was utilized in locating the evidence.
This was in the methodology section of the review. In addition, the review presented a clear search strategy where all aspects of the review question were addressed. There is also a description of the approach that was used to search and locate evidence. There was also an inclusion and exclusion criterion where only studies from particular data were included and this exclusion criterion was suitably justified. Adequate sources for the review According to Ham-Baloyi (2016) a systematic review should aim at identifying all the available evidence on the study topic and hence the search strategy should be comprehensive and at the same time explicit.
However, in this study, the location of data was not comprehensive enough because multiple electronic databases were not searched. However, major bibliographic citation databases were used to locate the articles used in this study. Reviews of efficacy aimed at searching trial registries to locate more information on the study topic. However, the search strategy was comprehensive enough and this reduced publication bias. Moreover, the review also attempted to locate grey literature that involved searching websites that were relevant to the study question.
Appropriateness of the appraisal criteria The review presented an explicit statement regarding the critical appraisal that was performed as well as provided details of the tools used in assessment of the studies used in the review. The tools used in appraisal were suitable for the review question. This is because the appraisal tool used addressed elements of validity for all studies that were used in the review (Ham-Baloyi, 2016). Appraisal of the review was conducted by more than one reviewer Critical appraisal to assess the quality of the literature used in this review was done by several reviewers.
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