COMPOSITE SCORES FROM VARIABLES MEASURED IN DIFFERENT SCALES

***How to convert 5-point scale to 7-point scale:

 http://www-01.ibm.com/support/docview.wss?uid=swg21482329.


*** How to create composite scores (2 ways)

http://jeromyanglim.blogspot.co.uk/2009/03/calculating-composite-scores-of-ability.html.