4 Answers

  1. Yes, it is connected. This is confirmed by the twin studies method and others.

    However, the contribution of genetics is not 100%. Character also depends on the external environment, including upbringing.

    To assess the contribution of genetics to the variability of multi-factor traits, a parameter called “heritability”is used. Heritability for personality traits is estimated at 30-60% .

    Link to a scientific study on the topic:

    https://www.nature.com/articles/s41380-018-0263-6

  2. Unfortunately or fortunately, at the moment there is not a single work that has proved a direct causal relationship between genes and character, between genes and IQ. Although the literature constantly says that we are on the threshold of this gene era. But there is NONE!

    Here is a piece of the article in English: “Over the past decade, there have been several studies suggesting potential gene variants that may be linked to IQ. Specific gene variants of APOE, a gene associated with Alzheimer's disease, seemed likely candidates. Single nucleotide polymorphisms (SNPs) from the brain-derived neurotrophic factor (BDNF), a cholinergic receptor (CHRM2) and cathepsin D (CTSD), a gene linked to schizophrenia, also showed some promise. All in all, about an even dozen different SNPs have popped up over the years as being significantly correlated with IQ scores. But a new study, led by Chris Chabris and David Laibson, suggests that none of these are linked to intelligence when you have a statistically powerful sample size. The group used three independent data sets with thousands of participants–and none of the findings were replicated.”.

    Quick translation: the bottom line is that various genes, regions of genes, etc., were identified that are supposedly responsible for the formation of IQ, but the study conducted by scientists Chris Chabris and David Laibson, using 3 independent databases of thousands of people, did not give any results.

  3. If we are talking about whether any character traits are inherited, then the correct answer is INDIRECTLY. This question is well studied on the example of animals.

    The character (in the” intuitive ” sense) is determined by two factors::

    1. Physiological parameters of the nervous system. They can be inherited.

    2. Lifetime experience (sets of behavioral patterns): (a) upbringing and the general environment (this is also a kind of inheritance, only not genetic, but mental) and (b) experience acquired independently.

    It hardly makes sense to describe all the mechanisms in detail in this answer. But roughly the role of heredity can be estimated at 30%. It is no coincidence that Pavlov's “type of GNI “and” type of external behavior ” are not the same thing.

  4. Everything is connected to everything. In particular, human character and genes are two concepts mentioned in the question above. This is already a link between these concepts.

    That is, even if these two concepts were not connected before this question appeared, now they are definitely connected.

    But there is an assumption that the question meant “is a person's character a consequence of his set of genes?”. And this question is too general to be tested experimentally within the framework of a scientific approach.

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