Past lives reincarnation is a theory dictated by the Hindu philosophy of athma, or soul, and karma, or deeds. With this, the soul goes through past lives reincarnation and other births, because it is indestructible and cannot be destroyed. Instead, it only changes form from one life to the next, much as you might change outfits once one has outlived its usefulness.

This is very different from Christianity's view of reincarnation, which focuses on Christ's resurrection. The Hindus state that the soul can inhabit any form, man, woman or animal. The deeds or karma of a human being in one life dictate what's going to be his or her life in the next.

There are several Hindu scriptures that speak very much about past lives reincarnation. Notable among these is the Bhrigu Sanhita, which apparently had a complete accounting of both past and future births for all living souls. Unfortunately, this scripture has been lost over time.

In regard to modern-day reincarnation theory, Dr. Ian Stevenson has collected some compelling data. Even though modern science scoffs at the idea of past lives reincarnation, Dr. Stevenson believed in it. Therefore, although it can't be said that his data is the most respected scientific data on the theory, it's very famous and his cases are very well documented because Dr. Stevenson held a degree in medicine and was a psychiatrist.

Unlike today's past life regression therapists, though, Dr. Stevenson didn't put his patients into trance or hypnotize them. Instead, he interviewed children who had spontaneous recollections of the incidents they experienced in their past lives.

Among the most famous and puzzling of these cases was that of a small boy, six years old, who came from a small village in Punjab. The little boy claimed that he had been a man named Satnam Singh in a past life, and could even minutely described the man's village of of Chakkchela; that was true even though the child had never been there.

The family tried to dissuade the boy from making these claims, but he nonetheless continue to do so. He even revealed the name of Satnam's father. The boy claimed that he, Satnam, had been killed in a motorcycle accident when he was on his way home from school. This claim was investigated, and it was indeed found that the man had been killed in just the way the young boy described. He also revealed other intimate details about the family, but the most startling aspect of his reincarnation claims was that when the young boy's and Satnam Singh's handwriting was compared, it was found to be identical.

Another startling case from Stevenson's files involved that of a young girl, three years old, named Swarnalata. This child remembered that she had been a young woman named Biya Pathak, and could vividly described the house that she lived in. In fact, when she and her father were traveling one day, she led her father directly to the property and even said that she had lived in the area; further, she said that they could get a better cup of tea in that house than they could on the road. Her recollections were completely validated, however, when the little girl recognized the young woman's brother, and addressed him by a pet name the young woman had had for him, from a group of nine people.

Stevenson lists dozens of these cases in his data, and also states that in some cases, when there has been a physical trauma in the last life, it can manifest in the form of a birthmark in the next life. A man from Thailand seemed to illustrate this; he recollected that he was his own deceased maternal uncle, reincarnated. And indeed, this man had a scar on his head that was located in the exact same place as a knife wound his uncle had died from.

Another young boy claimed to remember a past life as a man named MahaRam. This man had been killed by close contact gunfire to the chest, and the boy had several birthmarks on his chest that looked like gunshot wound scars.

Dr. Brian Weiss is considered to be the father of modern past life regression, and he and several other eminent authorities in the field of psychiatry and psychology consider that the concept of rebirth is in fact a plausible one. Nonetheless, science itself remains very skeptical about it. It's also worth noting here, however, that when people do undergo past life regression therapy, they often suddenly dispense with lifelong fears and phobias.