combining scores from questions measuring the same construct but with different scales

Posted by Zdaniuk, Bozena-3 on Nov 14, 2017; 8:03pm
URL: http://spssx-discussion.165.s1.nabble.com/combining-scores-from-questions-measuring-the-same-construct-but-with-different-scales-tp5735150.html

Hello everyone, I would like to gather people’s ideas on how to combine data measuring the same construct but with different scales. I have done it in the past by turning scores into z-scores but are there other ways?

e.g, a question “do you like color blue?”

Data set 1:– Answer options “yes” and “no”

Data set 2:- Answer options “1-I don’t like it at all”, “2-I like it a little”, “3 – I like it a lot”

Data set 3: - Answer options “1-I don’t like it at all, 2, 3, 4, 5, 6, 7-I like it a lot”

 

Thanks so much for any ideas, pointers to literature, websites, etc.!

Cheers,

Bozena

 

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