Skepticism and psychotherapy.

"...In order to have memories we need extensive development of the frontal lobes, which infants and young children lack. Memories must be encoded to be lasting.
If encoding is absent, amnesia will follow, as in the case of many of our dreams. If encoding is weak, fragmented and implicit memories may be all that remain of the original experience.
There is no possibility of recalling abuse or anything else in prenatal, early postnatal life or infancy...
Implicit memories of abuse do occur, but not under the conditions assumed to be the basis of repressed memory syndrome...."

From Unhelpful approaches to mental and emotional disorders.
By Jill Gordon, writing for Skeptic magazine.
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http://www.skeptics.com.au/journal/2003/2_psych.pdf