I am an 'old soul' and believe that I am a reincarnation of someobody from my past or another life. Is reincarnation real?

Yeah, it's real. This can and will be proven in the laboratory one day, by construction of a soul-detector and using that soul-detector to detect a soul moving into a new body.In the meantime, reincarnation can be deduced by a strictly theoretical analysis and there is actually a

If reincarnation was real, if someone reposted in this life, what would they be born as in their next life?

Humans are only reborn as humans. Sorry to disappoint. Our Katra, life force, soul, whatever you call it is only compatible with a single species.When a body dies the Katra seeks out a new host. Essentially we are symbiotic. The human feeds the soul information and the