Can we combine two indices where one indice is constructed using PCA on 5 likert scale while other indice is constructed using PCA on binary scale?

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Peter Samuels

Dear Sunil,

The way you can combine these variables is by saving the regression score rather than by adding the scores on each variable.

Sunil Sangwan

I want to create one construct merging these two indices. And these indices are having different variation...one is variation of 5 scale and other is binary scale. One way is standardisation but if I do that the variation of 5 scale will become too low and same will be with the construct