Many variables will influence the particular environment a child experiences. Birth order, for one, automatically places siblings in dissimilar situations. The older sibling has to suffer the pain of seeing parental love and attention directed toward an intruder. The younger sibling may need to learn survival in an environment that harbors a stronger, potentially hostile rival, and never comes to know either the special status or the burden of being an only child. The full weight of unconscious parental expectations is far more likely to fall on the firstborn.
