A relative of mine is in such a family. . . successful, pushed hard, and very intelligent. But due primarily to social issues and pressure he had something of a mental breakdown during the first year of his postgrad studies.
The family's response was totally unexpected (given their style of raising him) and admirable. Rather than yell at him or push him harder, they bucked the social taboo, took him to see a psych-doctor, and basically brought him to live at home. His father in particular went from detached to nurturing and protective. Over a couple years this relative of mine has improved dramatically in his condition.
I don't know of too many cases - but just as the author of "Tiger Mothers" explains - there's deep love in that style of family too. I've lost track of how many times my own parents remind me that if I *couldn't* do it, they wouldn't be upset. . . but to not make the effort, to not live up to my God-given talents. . . that was inacceptable. Sad as it would be, I'm totally confident that if I'd been born mentally handicapped, they'd have nurtured me within those limits and pushed me to the limit of what I could achieve with that handicapped mind. They'd effectively have said, "Sure, you're handicapped, now don't let that be an excuse to be stupid/an under-achiever also!"
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There is no surer aphrodisiac to a man than a woman who is interested in him.