Presumably you could test this with a within-family study by seeing if people can unswap same-sex sibling birth-name/photo pairs correctly.
A convoluted explanation of a simple phenomenon: people don't give their children names at random. https://www.ncbi.nlm.nih.gov/pubmed/28240942 pic.twitter.com/Vs1Mu92B65
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Good idea.
End of conversation
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