Study Reveals Fetuses Can 'Catch' Yawns from Mothers Before Birth
Babies May Catch Yawns Even Before Birth, Study Suggests

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A recent study published in Current Biology suggests that fetuses can begin to exhibit contagious yawning as early as the second trimester, potentially 'catching' yawns from their mothers. Researchers found that approximately 53% of fetuses yawned in response to their mothers yawning while watching yawning videos, indicating a prenatal connection between maternal and fetal behavior.
- 01The study involved pregnant women watching videos of yawning, mouth movements, and still faces.
- 02About 64% of mothers yawned while watching yawning videos, while fetuses yawned 53% of the time in response.
- 03The fetal yawning typically occurred about one and a half minutes after the mother yawned.
- 04There was a positive correlation between the frequency of yawning in mothers and their fetuses.
- 05The researchers propose that this phenomenon may be linked to physiological contagion rather than social behavior.
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A groundbreaking study from the University of Parma has revealed that fetuses may exhibit contagious yawning, potentially beginning as early as the second trimester of pregnancy. Published in Current Biology, the research involved mothers watching videos featuring yawning, mouth movements, and neutral expressions, with a camera capturing their reactions and a 2D ultrasound monitoring the fetuses. Approximately 64% of mothers yawned while viewing the yawning videos, while 53% of fetuses responded with yawns, typically about one and a half minutes after their mothers. This correlation suggests a significant connection between maternal and fetal yawning patterns, with mothers who yawned more frequently having fetuses that also yawned more. The authors of the study hypothesize that this could be due to a form of intrauterine physiological contagion, indicating that yawning may be an innate behavior that develops early in gestation. The findings add a new dimension to our understanding of yawning and its social implications, suggesting that even before birth, fetuses are attuned to their mothers' behaviors.
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