Before revision: Similarly, the Rasch "Rating Scale" model (Andrich, 1978) is where is the difficulty of item i and is the kth threshold of the rating scale which is in common to all the items.
After revision: locationSimilarly, the Rasch "Rating Scale" model (Andrich, 1978) is where is the difficulty of item i and is the kth threshold of the rating scale which is in common to all the items.