4. Genetics and intelligence
Until today, there are numerous statistical studies on IQ heritability. The observed correlation 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 the lack of a correct definition of the variable to analyze. If the studies were about the color of the sisters' flowers or rats, as in the typical examples of Mendel's laws, again the results would be low correlations!
There is not a simple linear relation; there are jumps in continuous variables with random processes governed by evolutionary genetics laws. Establishing the relationships implied by the Conditional Evolution of Life, it is possible to obtain a high IQ correlation between the parents and their children. Therefore, it indirectly verifies the coherence of the theory.
The genetic influence on cognitive abilities has been and continues to be a great topic of debate because of its possible social consequences.
The EDI Study shows both the hereditary nature of relational intelligence in general and in the strict sense –with high reliability; in other words, it validates a large part of the Conditional Evolution of Life.
Although Statistics is famous for its vulnerability to manipulation, it is also true that some people do not want to recognize reality as evident as it may be. They are happier living in their imaginary world!
This chapter looks at a few points in favor and against a high correlation in evolutionary genetics of intelligence, and at the difficulties or elements allowing for the coexistence of such different positions.
4.a) Genetic predisposition
4.a.1 Highly gifted children
Their existence indicates the genetic inheritance of intelligence beyond a reasonable doubt.
Another significant argument supporting the heritability of human intelligence is the impossibility to isolate any specific environmental cause for the observed correlations. Also, brothers and sisters with similar environments have different levels of reasoning.
4.a.2 Cognitive processes and genetics
The method of Verification of Genetic Information occurs, in this case, just after the genetic transmission and even after the initial development of a new being. However, keeping the adjective related to genetics in the name of the method indicates its design is innate.
The book Conditional Evolution of Life includes a section on the theoretical framework of the EDI Study about the nature of intelligence and genetics with or without the application of the method of Verification of Genetic Information.