4. Genetics and intelligence
Until today, numerous statistical studies have been done on the IQ heritability. The observed correlation in the IQ is low, except in identical twins, which is 80-85% among them; nevertheless, if they had considered the relationship with their parents, they would also have obtained a low correlation.
The problem is that they have not defined correctly the composition of the variable to be studied. It seems that if they would study the correlation of the colour of the sisters' flowers or rats, as in the typical examples of Mendel's laws, they would have obtained low correlations!
It is obvious that it is not a question of a simple linear relation; there are jumps in continuous variables with random processes governed by laws intrinsic to evolutionary genetics. Establishing the relations implied by the GTCEL, it is possible to obtain high IQ correlation between the parents and their children. Therefore, it is indirectly proved the coherence of this theory of evolution.
The influence of genetics on cognitive abilities has been and continues to be an intense topic of debate because of the consequences that come from one stance or the other.
As I have previously stated, The EDI Study in my opinion shows both the hereditary nature of intelligence, strictly speaking and therefore relational intelligence in general, and a large part of the GTCEL itself.
Although statistics is a famous science due to its vulnerability to manipulation, it is also certain that this argument is often used when people do not want to recognize the facts as clear as they may be.
We will briefly look at a few points in favor and a few points against a high correlation between genetics and intelligence and at the difficulties or elements that allow for the coexistence of such different positions.
4.a) Genetic predisposition
4.a.1 Highly gifted children
The very existence of gifted children indicates beyond reasonable doubt the genetic inheritance of intelligence.
The other significant argument which supports the genetic inheritance of human intelligence is that it has not been possible to isolate any specific environmental cause which in itself affects intelligence. It is well known that brothers and sisters with similar environments and different levels of intelligence exist.
On the other hand, the fact that children intellectually, physically or artistically gifted exist supports the hereditary character of these abilities.
4.a.2 Cognitive processess and genetics
The method of Verification of Genetic Information is performed, in this case, at the moment subsequent to the genetic transmission and even after the initial development of a new being. However, we want to conserve the adjective related to genetics in the name of this method to indicate that the genes determine the operative structure.
Due to its importance, being the theoretical base of the statistical model previously cited, it would be a good idea to read the graphic explanation in the case of intelligence that is included in the page of the Evolution of man of the book Conditional Evolution of Life about the nature of intelligence and genetics with or without the application of the method of Verification of Genetic Information from a functional point of view.