Spiritism
Main article: Spiritist doctrineIn Spiritism, karma is known as "the law of cause and effect", and plays a central role in determining how one's life should be lived. Spirits are encouraged to choose how (and when) to suffer retribution for the wrong they did in previous lives. How we know of this without remembering we had the choice is ambiguous. Disabilities, physical or mental impairment or even an unlucky life are due to the choices a spirit makes before reincarnating (that is, before being born to a new life).
What sets Spiritism apart from the more traditional religious views is that it understands karma as a condition inherent to the spirit, whether incarnated or not: the consequences of the crimes committed by the spirit last beyond the physical life and cause him (moral) pain in the afterlife. The choice of a life of hardships is, therefore, a way to rid oneself of the pain caused by moral guilt and to perfect qualities that are necessary for the spirit to progress to a higher form.
Because Spiritism always accepted the plurality of inhabited worlds, its concept of karma became considerably complex. There are worlds that are "primitive" (in the sense that they are home to spirits newly born and still very low on intellect and morals) and a succession of more and more advanced worlds to where spirits move as they are elevated. A spirit may choose to be born on a world inferior to his own as a penance or as a mission.
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