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When it comes to comparison, it is better to ask from experts who can do in-depth research and provide you with suitable answers. I really appreciate you trusting over the experts here but it’s a matter of career and life.  

Try consulting the professional research experts.

Boston Dissertation  

Replied 2 years ago

By Anjum

Oh. I understand your point. I just wanted to have experts’ opinions from here as I do not trust websites because of the fear of getting scammed.

Replied 2 years ago

By Jeremy

Hi Anjum, I know how it feels. That is why I recommended this website. I have worked with this team personally and they are good. Remember, you talk and understand the policy of which website you talk to first and always go for the divided tasks. This way you can check the quality of the work side by side without paying the whole amount.

Hi Anjum, usually the results derived from a test are put on an interval scale. If they are convertible, then you can compare them with each other. For comparison, you can use the t-test method. However, I would like to have more information about your research like whether there are variables, what is the purpose of comparison, and so on in order to suggest to you the methods with confidence.  

Replied 2 years ago

By Anjum

I tried that method but the issue is that the cognitive functions are different and I am confused in regards to that. Like in the previous study, the voluntary actions weren’t the part of research but in my study it is. 
Basically, the time as well as the functions are different. So, is there no way of comparing these?

Hello dear, I don’t know much about it but I hope these links will be helpful to you. If they are, please do mention it.

https://www.ncbi.nlm.nih.gov/books/NBK305230/
A comparison of methods for measuring cognitive change in older adults
Comparing Traditional and Digitized Cognitive Tests Used in Standard Clinical
Evaluation - A Study of the Digital Application Minnemera

Replied 2 years ago

By Anjum

Hello Raman, thanks a lot for the links. I will definitely let you know, if these turn out to be helpful and vice-versa too.

Are you talking about the norm-referenced tests? Because in that case, you already have standard scores and comparing them is easy. For example, if the cognitive functions include the IQ, deviation, or z score, then the results can be compared directly.  Why? Because standard scores have the capability of getting converted into different scales without much hassle. Based on the standard errors in the measurement of such scores, the results become interpretable. The standard values and differences can be calculated by using the two common tests for comparison; one is standard deviation and the other is reliability coefficient.  But before moving forward with this approach make sure that you are not including biased data. It is possible that one of the standardized samples is biased or intentionally included the weaker or stronger section of people with the cognitive functions. In such cases, the comparison can become unreliable and biased too. I wish you very good luck for your research work. All the best

Replied 2 years ago

By Anjum

Thank you so much for your suggestion and warning. I will keep this in mind while doing the comparison.

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