11/04/2020
Have you ever wondered if the size of your baby’s head may determine your baby’s IQ later in his/her life?
To answer this question, some clinical researchers decided to measure and study thousands of babies' heads at birth. They even followed up with their parents, all the way through to these babies becoming adults. They tested these children's levels of intelligence at various ages. They even looked at their academic records and achievements. This is what they found…
An average male baby’s head circumference is approximately 35 cm, while a female baby’s head circumference is approximately 34 cm at birth.
At birth, a baby’s head is approximately ⅕ of their body size. While the body develops fast, the head continues to expand. By age 5, the skull grows to over 90% of the adult size.
The expansion of the head and its growth within the first year is most important to the baby’s neurocognitive development.
In fact, only prenatal growth and growth during infancy (within the first year) were associated with subsequent IQ.
After studying 633 term-born children, this is what they realized….
At 4 years, a child’s full-scale IQ increases by an average of 2.41 points for each standard deviation increase in head circumference at birth.
The child’s full-scale IQ also increases an average of 1.97 points for each standard deviation increase in head growth during infancy, conditional on head size at birth.
By 8 years of age, head size at birth is no longer associated with IQ, but head growth during infancy continues to influence subsequent IQ, with full-scale IQ increasing an average of 1.56 points for each standard deviation increase in growth.
Baby’s with a bigger head does tend to perform better at tasks related to intelligence.
The brain volume a child within their first year of life helps lay a foundation for their IQ. Growth in brain volume after infancy may not compensate for poorer earlier growth.
Having said that, are you wondering if creating a baby with a bigger or a smaller brain is something you can control?
So, are you curious to know how you can create a baby with a bigger brain at birth? If so, stay tuned for my next post!!