”He conducted a study with 900 participants to substantiate that these emotional response types exist and can be reliably measured.”
Attracive features is not expected, but basic featuers that is missing is a reason for dissapointment.
Over time – Attractive featuers becomes must haves.
Jared Spool on a conference.. http://delight.us/using-the-kano-model-to-deliver-winning-ux/
But is this really a good method for selecting features? What the user say might not be what he needs..