A recent study published in Nature Human Behavior indicates that only children are smarter, happier, and more creative than peers with siblings. Researchers from China analyzed 7,186 participants between 18 and 30 years old using brain imaging and behavioral assessments. The findings showed that only children had better mental health and cognitive abilities, including superior language skills. They also reported higher life satisfaction and demonstrated traits such as openness and creativity, along with less impulsiveness. Factors like parental attention and socioeconomic status significantly contribute to these outcomes for only children.
Contrary to the stereotypical impression of associations between [only children] and problem behaviors, we found positive correlations ... with neurocognition and mental health.
One of the most notable findings was that being an only child was linked to better mental health, memory and having 'superior language ability'.
More economic resources coupled with heightened parental availability, attention and responsiveness may provide a solid basis for [only children's] intellectual competence, psychological well-being and mature social behaviors.
Only children showed more openness and novelty seeking, and less reward dependence and cognitive impulsiveness, distinguishing them from their peers with siblings.
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