Query regarding rho-a and rho-c

[Sweta Jain]

Respected Sir and members

Greetings!!

I am using Smartpls 4 for analysis of my empirical model. All my measurement and structural results are fine, except rho-a and rho-c value of two constructs being more than 0.95 (between 0.95 to 0.965).

1. How can this be addressed? Any video/reading on the same?
2. Is this a mandatory ask in the analysis to address this when all other results seem fine?

Kindly advise.

Best Regards

Sweta

[Prof. Arunkumar Dubey]

Dear Sweta,

High reliability figures are usually associated with measurement error. 

Try cleaning your data by applying Standard Deviation formula in the excel sheet based on rows. 

Selectively remove those rows where you find SD is zero or very low. 

Rerun the analysis and see if it improves. 

Regards,

Dr AD

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[Sweta Jain]

Sure Sir. I will follow the steps mentioned. 

Thank you so much for your kind advice.

Best regards.

Sweta

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Sweta Jain

[Muhammad Rizqi Siregar]

Dear Sweta,

Why should a high composite reliability be a problem?

In a reflective model (where cases like this most likely happen), you want unidimensional construct, with all items measuring the same phenomenon but are not semantically redundant. High reliability is, therefore, desirable.

See the discussion here:

https://forum.smartpls.com/viewtopic.php?f=5&t=3805

Fiddling with your dataset—dropping some observations to avoid seemingly very high composite reliability, because near-perfect reliability rarely occurs in empirical study or for whatever reasons—doesn't seem right to me. If you choose to do that, make sure to report what you do.

Best,

MRS

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