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developmental psychology

Joe Bay (center), coach of a New York City "Bootcamp for New Dads," instructs Adewale Oshodi (left) and George Pasco in how to cradle an infant for best soothing. Jason LeCras for NPR hide caption

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Jason LeCras for NPR
Ariel Davis for NPR

School Shooters: What's Their Path To Violence?

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Previous research has shown that babies in the first year of life understand that certain individuals tend to win in social conflicts — such as individuals that are physically larger, or that come from larger social groups. Rick Lowe/Getty Images hide caption

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Rick Lowe/Getty Images

Toddlers Like Winners, But How They Win Matters

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Two bonobos play fight at the Lola Ya Bonobo sanctuary in Democratic Republic of Congo in 2012. Emilie Genty/Barcroft Media via Getty Images hide caption

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Emilie Genty/Barcroft Media via Getty Images

Unlike Humans, Bonobos Shun Helpers And Befriend The Bullies

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