By Juliette Roche Published 08/06/2018 at 16:18

According to a scientific study, the intelligence of the child is transmitted by the mother. Why ? Because the genes of the intelligence come from the chromosome X. As the woman has two of them, one deduces that it is more likely than the man to influence the cognitive capacities of his children. But in fact, everything is not so simple, we explain!

The X chromosome, responsible for the intelligence of children?
On her blog, Psychology Spot, the Spanish psychologist Jessica Delgado, says that the intelligence of the child would be transmitted by the mother.

The genes of the intelligence come from the chromosome X. As the woman has two of them, the psychologist deduces that she is more likely than the man to be at the origin of the capacities of intelligence cognitive (it 's that is to say the memorization, the attention, the language, the reasoning ability) of his children.

It builds on the work of Robert Lehrke. In 1972, he was the first to make the link between the X chromosome and cognitive abilities. But his study concerned a sample too small (about ten families) to make a generality.

Later, new studies prove that the maternal genetic fingerprint does influence the development of the child's brain, but not more than that of the father.

How is the intelligence of the child defined?
Intelligence is not defined solely by the X chromosome. In 2015, a team of researchers published in the journal Nature Neuroscience a study on human intelligence.

It would be defined by a multitude of gene networks, nearly 1300. Among them, only sixty are found on the X chromosome.

In addition, researchers agree that intelligence is also built through the education and environment of the child.

The way parents care for their offspring, influences the evolution of their cognitive abilities.

Conclusion, even if we would like to boast to everyone that our toddler has inherited our superior intelligence, we must not forget that daddy is also for many.