(I) Many people claim they can remember being in the
womb or their first two years of life, but it is doubtful that
these are genuine memories. (II) At five months old, the
human fetus weighs under 500g but has fully developed
lips, eyes, fingers, and toes. (III) Claims may be based
on children feeling as if they were at the age of 1 or 2.
(IV) Most adults can remember events only as far back
as the age of 3 or 4. (V) Young children often remember
further back, but these early memories generally fade
away as they grow older.