The Outcomes Of A Therapy Can Be Researched Quantitatively

925 WordsMay 22, 20174 Pages
The outcomes of a therapy can be researched quantitatively or qualitatively. The results of a quantitative study are presented in numbers, whereas the results of a qualitative research are presented in words (Barkham and Barker, 2010, p. 282-283). Both approaches have advantages and disadvantages. The discussed study (McKenzie et al., 2011) presents its findings in numbers and, therefore, is quantitative. However, the questionnaires used in the study included some open questions, allowing qualitative data which was included in the report. One of the strengths of the quantitative approach to the outcome research is generalisability (Barkham and Barker, 2010, p. 284). The findings from a quantitative research on large numbers of…show more content…
These are scales made with word ratings that are converted into numbers as a part of the analysis. It remains unclear if those numbers reflect the word ratings reliably. Another advantage of using a quantitative approach is that it allows calculations on the findings (Barkham and Barker, 2010, p. 297-300). Firstly, it allows to calculate the statistical significance of the findings. This tells us what are the chances that a change actually occurred. Secondly, the size of the difference between the measures on the beginning and on the end of the study can indicate whether the results were clinically significant. A clinical significance occurs when a participant’s scores moved from the average of one population to another. This can indicate if the client moved from the clinical population to the non-clinical population. Finally, the effect size can be calculated. This statistic is used to estimate whether the effect was small, medium or large. In the discussed study (McKenzie et al., 2011), a significant change of a large size has been found in three out of four of the measured domains. A weakness of the quantitative approach to outcome research is that while it can tell us if a specific treatment can be effective, it doesn’t tell us what specifically makes it effective (Barkham and Barker, 2010, p. 284-285). For this reason, researchers often include additional qualitative methodology to a quantitative study. Indeed,
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