In child psychology birth order is often considered significantly determinative.

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Professor Susan Golombok, director of the Family and Child Psychology Research Centre at City University in London, explained why families with IVF children might be more stable and contented.

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In the latest work, published Jan. 15 in the Journal of Child Psychology and Psychiatry, Dr. Fein said the researchers sought to exclude children in whom the original diagnosis was questionable.

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Shortly after that, the poor kid was dragged off to a performance of "Die Fledermaus" by his parents, who must have been on more comfortable terms with comic opera than with child psychology.

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And to make matters worse, a century of developmental child pop-psychology has established cultural norms that are not easily reconciled with the realities of networked society.

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Fussell, who has a 1-year-old child, is studying psychology at Florida Community College at Jacksonville.

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Rifkin based his work on dozens and dozens of recent breakthroughs in cognitive neuroscience, neuro-psychology and child development.

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