Cognitive Shadow

A Cognitive Shadow is the continuance of a person to act even after it has died; a spirit that has not yet moved on. It is a force of mind, holding one's spirit together, preventing it from diffusing. Khriss declines to comment on whether the nature of a Cognitive Shadow is actually the soul of a person who died; she believes this to be a question for a theologian or philosopher.

She does, however, explain what is happening magically: On Threnody, the people think of these entities as ghosts, though really they are instantiations of self-aware (though, barely) Investiture.