One man's schizophrenia is another man's spiritualist.
https://www.studyfinds.org/how-do-people-hear-dead-scientists-reveal-why-some-have-sixth-sense/
https://www.studyfinds.org/how-do-people-hear-dead-scientists-reveal-why-some-have-sixth-sense/
Study Finds
How do people 'hear the dead'? Scientists reveal why some have 'sixth sense' - Study Finds
The survey finds nearly half (44.6%) of spiritualist participants say they hear the dead on a daily basis.