Psychomotor symptoms in primary psychotic transtornos include psychomotor agitation or excessive motor activity, usually manifested by purposeless behaviours such as fidgeting, shifting, fiddling, inability to sit or stand still, wringing of the hands, psychomotor retardation, or a visible generalised slowing of movements and speech, and catatonic symptoms such as excitement, posturing, waxy flexibility, negativism, mutism, or stupor. The rating should be made based on the severity of psychomotor symptoms during the past week.