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Only child syndrome? These kids are no more ‘selfish, narcissistic’ than others, study suggests

Wherever you fall in a group of siblings, there are plenty of stereotypes about the sort of person you are ...
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Are first-borns really more assertive? How birth order affects personality

In spite of sharing genes and environments, siblings are often not as similar in nature as one might think. But ...
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‘Only child’ no more: DNA test reveals woman has at least 29 brothers and sisters

For Shauna Harrison, her journey from only child to a sister with 29 siblings started with a revisit to her 23andme ...
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Autism, attention deficit disorder share ‘significant’ genetic links, sibling study shows

Children who have an older sibling with attention deficit hyperactivity disorder (ADHD) are at an increased risk of having autism, ...
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Why do siblings of children with autism also have social problems?

Even typical siblings of children with autism tend to struggle with anxiety, depression and social difficulties, according to a large ...
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Family ties: Searching for autism origins in the genes of unaffected siblings

Scientists have historically focused on studying a “quartet” of two biological parents and two autistic children. Yet more recent research ...