Rating Scales for Catatonia The routine use of validated rating scales has also been advocated to facilitate the identification of catatonic signs and a diagnosis of catatonia. A rating scale helps to identify people who have catatonia that might otherwise not have been diagnosed. Seven catatonia rating scales were retrieved:  Modified Rogers Scale Rogers Catatonia Scale,  Bush-Francis Catatonia Rating Scale  Northoff Catatonia Rating Scale Braunig Catatonia Rating Scale  Kanner Scale