Now the first sentence is even worse: "Parapsychology is a discipline that seeks to demonstrate the existence and causes of psychic abilities and life after death using the scientific method." First of all the word discipline is obtuse in this. If it truly "seeks to demonstrate" then it is not science. If there is no evidence for psychic abilities then looking for causes is not scientific. What you are describing is a belief system.

"Parapsychology is the scientific  study of claims of the existence of psychic ability and life after death." would be a more sensible lead statement (if indeed that is what parapsychology is). Gosh, hard to believe I haven't got past the first line yet!