A correlation of the latest studies on the subject of Intelligence Quotient of Species suggests that baby mother weight ratio at birth might be a factor in how IQ varies among different species and why human beings are on top.
Humans are the smartest species on the planet. Different species surround us, some are predators, and some are prey. But none has been untamable for us. This clear mental superiority is perhaps one of the biggest mysteries. How did we become so smart? What influenced our mental superiority? While the body to brain ratio is one, it isn’t the only one.
Heads Up! Does Baby Mother Weight Ratio determine IQ?
- Why humans are mentally superior? The Great Mystery
- How babies develop across different species
- Baby to Mother Weight Ratio for different species
- Study suggesting different IQ level in different weight categories in newborns
- From hypothesis to theory – Future studies
Why humans are gifted with such an exceptional intelligence quotient could also be related to a newborn baby’s weight ratio to the mother. In fact, recent studies could be leading us to the assumption that perhaps IQ may be influenced by the baby mother weight ratio.
Baby Development from Species to Species
Different species develop differently. Some are born weirdly tiny and underdeveloped while some come out of the womb more self-sufficient. Mammals on earth can be classified on how self-sufficient their babies are at the time of birth.
Mammals can be classified on how self-sufficient their babies are at birth.
Babies that need a lot of care like humans and pandas are known as altricial babies. Likewise, babies like that of giraffes and elephants are more developed and known as precocial babies. However, despite being so developed as compared to human babies, none have a better IQ.
Newborn Baby to Mother Wright Ratio
When analyzing the baby weight ratio at birth with their mothers, homo sapiens definitely stand out with 1/22. Some other bigger mammals like African Elephants (1/45), Giraffes (1:10), Killer Whales (1:50) also fall in the similar bandwidth.
However, species like the Giant Panda and Red Kangaroo have a far bigger difference at 1/900 and 1/1,00,000 respectively. Babies of Giant Pandas and Red Kangaroos are astonishingly small and underdeveloped at birth. They are in fact tiny as compared to their mothers.
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How birth at weight factors into IQ
Perhaps a newborn baby’s weight ratio at birth may be a big factor determining the intelligence quotient level. Correlation of both recent studies suggest that lower ratio might mean a higher IQ level in species. While humans fall perfectly in this assumption, there are a few exceptions like the Giraffe at 1/10.
Furthermore, as per a study conducted in Denmark, researchers examined human babies on this parameter. The study found IQ differences in broader categories of less than 2.5 kg (underweight), 2.5 kg to 3 kg, 3 kg to 3.5 kg, 3.5 kg to 4 kg, and above 4 kg (overweight) babies when they were tested at the ages of 19, 28 and later at 50.
When comparin babies of less than 2.5 kg and 3.5-4 kg, the later scored more than 5 points on IQ tests both at the age of 28 and 50.
When the study compared babies of less than 2.5 kg and 3.5-4 kg babies found that the later scored more than 5 points on IQ tests both at the age of 28 and 50.
Baby Mother Weight Ratio may be directly linked to IQ, but more studies are needed
In short, higher weights were equated with a slightly higher IQ in the study. The researcher also found that IQ differences between the different birth weights are stable from young adulthood into midlife. In the study, the average weight babies ranged from 3 kg to 3.5 kg. However, it was found that at all the 3 follow-ups (i.e. 19, 28, and 50 years of age) birth weight was significantly associated with their IQs.
While the studies give startling insights into how the IQ is determined, the findings aren’t enough to support the assumptions in a concrete way. Therefore, more studies and not just on a few species but on a large scale are needed to straighten out the assumptions from a hypothesis to a theory. However, comparing humans with the other mammals, baby mother weight ratio could be a possible reason for explaining why humans of all species have higher IQs.