* Test text''There are 2 switch possibities'': '''Number 1 (the general approach):''' * '''Day 1: ''' Switch to oral risperidone (or oral paliperidone): see this switch in the main cross table.* '''Day 1-29: ''' Maintain on oral risperidone (or oral paliperidone ) and examine the effects.* '''Day 30: ''' stop oral risperidone (or oral paliperidone ) and administer paliperidone-LA: see this switch in the main cross table. Oral risperidone has better and more stable bioavailability properties than has oral 9-OH-risperidone=paliperidone. Food increases the absorption with 50-60% of the latter.   '''Number 2 (if a patient in the past reacted well on risperidon or paliperidone=9-OH-risperidone):'''