Query regarding Questionnaire Scaling for PLS-SEM Analysis

[Dr.Richa Jha]

Greetings!

I am currently in the process of developing the questionnaire for my thesis.  All my constructs are measured using a 7-point Likert scale; however, one variable, Air Quality Index (AQI), follows a 6-point scale. For PLS-SEM analysis, I wanted to ask whether it is appropriate to adapt the AQI variable into a 7-point Likert scale based on perceived air quality levels, or if it should be retained in its original 6-point format and handled differently in the model. I would be grateful for your guidance on the most suitable approach.

Regards 

Richa Jha 

NIT Kurukshetra 

[Sunil Chawla]

Dr . Richa,

Using six point scale (reducing 7 point Likert scale) by removing the neutral option pushes the responder to give a choice for the item.  

As PLS SEM algorithm standardizes the values, different scales can be analysed. Standardization reduces the variations caused due to length of scale. Since the reliability for each construct / variable   is computed and determined separately,  six point construct can be used with seven point constructs.

 In case one item of construct is 6 on six point scale and other items of the same construct are on seven point scale the linear transformation of 6 point into seven point can be done.

 

For above I have also taken the help of AI tools.

 

Would request Dr . Neeraj Kaushik  and Dr. Atul Shiva to add more to it and indicate  related references.

 Regards

Sunil

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[Neeraj Kaushik]

Actually using different anchor points for different constructs is a good thing as it reduces common method biasness

Plz refer to CMB-4 Remedies

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