<prompt> Which statement regarding delusions is true?They are almost exclusively found in schizophreniaGrandiose delusions are rarely encountered except in maniaThey involve a disturbance of thought contentThey involve a disturbance in perception  <response>: Another example is a person who is convinced that he or she is responsible for some disaster such as fire, flood, or eahquake with which there can be no possible connection. Delusion of mind being read: The false belief that other people can know ones thoughts. Ref ganongs review of medical physiology 25e p765 