There’s something inherently fascinating about twins—their uncanny similarities, shared quirks, and mirrored lives. But in some cases, it’s their unexpected differences that truly capture our attention. A recent study in Science Direct explored just that, documenting the remarkable reunion of identical twin sisters who were separated as toddlers and raised in entirely different cultures.
The sisters were born in South Korea in 1974 and spent their early years side by side—until a devastating accident at a crowded market separated them. Only one twin was found, despite her family’s relentless efforts. She stayed in Korea, while her sister—completely unaware of her twin or any siblings—was adopted by a family in the United States.
It wasn’t until 2018 that the American-raised twin uncovered the truth about her past. After submitting a DNA sample to a South Korean program aimed at reuniting separated families, she discovered not only her identical twin sister but also other biological siblings.
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Their astonishing reunion drew the attention of researchers, who saw a rare opportunity to explore a key question in twin studies: to what extent do upbringing and environment shape who we are—our personality, mental health, and intelligence?
The results of cognitive testing were striking: although the sisters shared identical DNA, their IQ scores differed dramatically. The twin raised in the U.S. scored 16 points lower than her Korean-raised counterpart—a gap more than double what researchers usually observe between identical twins, who typically differ by no more than 7 points.
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"The twins showed substantial differences in cognitive abilities that have been linked to strong genetic influence," one researcher observed. Multiple childhood concussions sustained by the US-raised twin, researchers speculated, could have played a role in her lower IQ score.
Still, despite their significant IQ gap and vastly different upbringings, the twins exhibited strikingly similar personality traits. "Notable is that both twins are distinctively high on conscientiousness—indicating that both are purposeful, well-organized, dutiful, and achievement-striving," the researcher wrote.
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Researchers also uncovered stark contrasts in the sisters' upbringing: the twin raised in Korea experienced a warm and supportive home, while her sister in the U.S. endured significant challenges within her adoptive family. And yet, both women demonstrated notable resilience, with similar scores in self-esteem and overall mental health assessments.
Their experience challenges assumptions about what shapes us. Despite growing up worlds apart, the twins reveal how genetics and environment can pull in opposite directions while still producing surprising points of connection. The study adds meaningful insight to the nature versus nurture conversation, showing that the answers aren’t always clear-cut.
This story originally appeared last year.
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You may have missed the actual meaning behind these 5 popular songs.
'Every breath you ...' what? 5 classic songs where people totally missed the meaning
I’ve never been a "lyrics guy"—as long as the words sound pleasing to the ear, are relatively interesting, and aren’t evil or distractingly dumb, I don’t care all that much what the singer is going on about. I’m focused on the dynamics, the color of the arrangements, the rhythms, and harmonies. It’s only natural that I’d misinterpret some songs over the years, including ones that I’ve heard a thousand times while walking around malls and supermarkets.
I know I’m not alone. And I’d argue there are plenty of factors behind this phenomenon: Some people take lyrics too literally, while others only focus on hooky choruses and fail to notice nuance in the verses. Context can also blind us—if the music is danceable and upbeat, you might fail to catch darker elements in the words. Still, it can be hilarious and/or shocking when hugely popular tunes are misinterpreted on a mass scale.
Speaking of which: Let’s consult a viral Reddit thread titled "Any songs that are (or were) misunderstood by the public?" There's a mountain of suggestions—everything from '90s Latin-pop hits to '80s heartland-rock epics. But five of them felt especially perfect, so let’s dig a little deeper below.
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The Police - "Every Breath You Take" (1983)
As someone argues in the comments, "Pointing out the real meaning behind 'Every Breath You Take' has to have become so commonplace that it can't really be misunderstood anymore." Point taken. But still…this eerie Police track continues to be used in pop culture and everyday life as a signifier of romance—appearing as the soundtrack to TV slow dances and being arranged for weddings by string quartets. It’s easy to assume, at first glance anyway, that the song's protagonist is pledging their devotion—sticking around for "every breath" their partner takes. Instead, the atmosphere is more disturbing, given the whole "I’ll be watching you" thing. "I didn't realize at the time [I wrote it] how sinister it is," Sting told The Independent in 1993. "I think I was thinking of Big Brother, surveillance, and control."
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Bruce Springsteen - "Born in the U.S.A." (1984)
"Born in the U.S.A." is one of Bruce Springsteen's signature songs—but also likely his most misinterpreted. As an official explainer video notes, the words "center around America's industrial decline and loss of innocence during the Vietnam War"—a message that became somewhat diluted as politicians began using the stadium-sized track for their campaigns. "Conservative commenters praised the song, and it earned the approval of both candidates in the 1984 presidential election," the clip's narrator adds. "Despite being adopted as a patriotic anthem, 'Born in the U.S.A.' is far from nationalistic." In a deep-dive piece, NPR quotes Springsteen talking about the song on stage: "'After it came out, I read all over the place that nobody knew what it was about,' he said before performing 'Born in the U.S.A' to a crowd in 1995. 'I'm sure that everybody here tonight understood it."
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Los Del Rio - "Macarena" (Bayside Boys remix) (1995)
Most Americans probably know the bubbly Bayside Boys remix of Los Del Rio's Spanish-language hit—it became the marquee moment of many a mid-'90s wedding reception and middle-school dance, thanks to its once-ubiquitous choreography. Maybe it's because people were too distracted by remembering the dance moves, but lots of us didn’t notice the lyrics. Of course, the chorus is in Spanish, which could have been a barrier for some, but the remix features English lines like the following: "Now don't you worry about my boyfriend / The boy whose name is Vitorino / Ha! I don't want him, can't stand him / He was no good so I, ha ha ha / Now come on, what was I supposed to do? / He was out of town, and his two friends were so fine."
"My little teenage mind was blown when I learned 'Macarena' was about cheating on a boyfriend with his friends," one Redditor wrote. "[Thank you] for the correction, it was 2 friends! Was sleep deprived writing this. I just did the moves, never questioned the lyrics." Yeah, gotta admit—this legitimately never crossed my mind either. Same with some of the people who took part in a reaction video for Distracify: "It’s definitely about dancing," one person said, before learning the truth. Another added, "I have no idea what it’s about still to this day. Please tell me it’s not something really dark."
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Baha Men - "Who Let the Dogs Out" (2000)
The party was nice. The party was pumpin'.' Until, that is, some "flea-infested mongrels" got involved. Back in 2000, you couldn't escape Baha Men's booming cover of "Who Let the Dogs Out"—it became a staple of sporting events everywhere, a kind of bookend for the Jock Jams era. "I know I definitely misunderstood 'Who Let the Dogs Out' to be about actual dogs," one Redditor wrote, likely speaking for most of the listening public. There's probably a good chance most of those people chanting the chorus weren't thinking about the song's real meaning, crafted by Trinidadian artist Anslem Douglas for his 1998 original. But if you pay attention to the lyrics, "Who Let the Dogs Out" has a feminist theme, telling the story of women who stand up against crass catcalling. "This is going to be a revenge song where a woman tells men, 'Get away from me—you're a dog,'" Douglas told Vice in a 2021 video history of the track. "[Offensive] slang was everywhere. It was just degrading women and calling them all sorts of derogatory names. I tried to do a social commentary as a party song, but the party song overshadowed the social commentary aspect of it."
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Hozier - "Take Me to Church" (2013)
One section of the Reddit thread is devoted to songs interpreted as pro-religion, when the truth is... well, more complicated. "'Take Me to Church' by Hozier is often used by Churches for things, and I’m like 'Oh, that’s not…,'" wrote one user. The bluesy, slow-burning ballad may use religious imagery. Still, it's about something more human—"[It's] this idea that powerful organizations use people’s sexuality in order to mobilize people against women, against gay people," the Irish songwriter told Genius in 2023. "And the justification behind that is often religious in nature." Hozier even isolated one particular lyric that highlights this misconception: "'She tells me, ‘Worship in the bedroom' [is] something tongue-and-cheek, a bit of humor to it, also revealing that this is not necessarily a traditional worship song," he said. "I think I still see my name put into playlists for Christian music, and I’m not averse to that—I don’t think the two are necessarily mutually exclusive. But that line I would’ve thought would’ve disqualified it from something like that."