Research indicates that genetics plays a major role in how much newborns cry and their ability to settle. A study involving 998 twins demonstrated that by five months, genetic factors account for up to 70% of differences in crying behavior. At two months, genetics explained around 50% of crying variations. The ability of infants to settle also shows a high genetic determination, with DNA accounting for 67% of differences by five months, suggesting limited parental influence on these traits.
Researchers tracked 998 twins at two and five months old to assess the impact of genetics on crying behavior, revealing significant genetic influences on crying duration.
At five months of age, genetic factors explained up to 70% of the differences in crying duration among babies, providing reassurance to parents about their child's behavior.
Dr. Charlotte Viktorsson asserts that crying in infants is largely genetically determined, with only limited options for parents to influence their child's crying.
A baby's ability to settle down is 67% determined by DNA at five months, with environmental factors being more significant at two months.
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