A lot of substantial psychiatric problems are actually starting and are identifiable much earlier than we ever thought.

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We are talking about patterns of behavior. What is striking about this is that it suggests that the rate (of disorders) in these much younger children, aged 2-5, are not very different from what they will be in children of 9 or 14.

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Early-onset depression is thought to begin in the teenage years but in fact it is turning out to be as early as we can begin to measure it. We ought to be thinking much more about who are the children who already have these disorders.

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