Only Child

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A child with no siblings, either biological or adopted. Despite years of research, large amounts of data and opposing theories, there is little evidence to suggest that only children are maladjusted.
References in classic literature ?
Luther, according to the scandal of his monkish enemies, was a brat of that hellish breed; nor was Pearl the only child to whom this inauspicious origin was assigned among the New England Puritans.
At the only child seat checkup Alexandria held in 1997, they checked 71 restraints.
The facts are clear: You can raise an only child to be healthy, productive, loving human beings.
However, the opposite also can be true: Some parents may give too much attention and love to an only child, and so develop a narcissistic and selfish child.
I had a lot of problems as an only child, a child whose parents were divorced at a time when divorce was very rare, and this made me a particular oddity.
It's very difficult for children to be the only child of color in a class," Griffin points out.
Individual children - particularly the youngest of a brood, or an only child - are given too much adult attention, and become afraid of being left alone.