Originally Posted by
Götterfunke
That children usually inherit their intelligence from their mother (or that the mothers intelligence is more significant than the fathers intelligence) is ancient wisdom, not a recent internet myth.
As JamesBond007 said, Arthur Schopenhauer already claimed this hundreds of years ago, and Plato alluded to this ancient truth before the birth of Jesus. A quote by Schopenhauer:
"With our knowledge of the complete unalterability both of character and of mental faculties, we are led to the view that a real and thorough improvement of the human race might be reached not so much from outside as from within, not so much by theory and instruction as rather by the path of generation. Plato had something of the kind in mind when, in the fifth book of his Republic, he explained his plan for increasing and improving his warrior caste. If we could castrate all scoundrels and stick all stupid geese in a convent, and give men of noble character a whole harem, and procure men, and indeed thorough men, for all girls of intellect and understanding, then a generation would soon arise which would produce a better age than that of Pericles."
There is also lots of anecdotal evidence to support this.
In "the world as will and representation" Schopenhauer wrote:
"Wenn wir nun die hier gewonnene Ueberzeugung von der Erblichkeit des
Charakters vom Vater und des Intellekts von der Mutter in Verbindung setzen mit
unserer frühem Betrachtung des weiten Abstandes, den die Natur, in moralischer,
wie in intellektueller Hinsicht, zwischen Mensch und Mensch gesetzt hat, wie auch
mit unserer Erkenntniß der völligen Unveränderlichkeit sowohl des Charakters, als
der Geistesfähigkeiten; so werden wir zu der Ansicht hingeleitet, daß eine wirkliche
und gründliche Veredelung des Menschengeschlechts, nicht sowohl von außen als
von innen, also nicht sowohl durch Lehre und Bildung, als vielmehr auf dem Wege
der Generation zu erlangen seyn möchte."
Roughly translated:
"If we now connect the conviction of the inheritability of character from the father and of intellect from the
mother that we have obtained here through our earlier observation of the big gap that nature has set
in between humans considering their intellectual capabilities, as with our understanding of the absolute
inalterability of both the character and the intellect, we will soon be led to the conclusion that
a thorough and real refining of humankind is not possible from the outside by means of education
or teachings, but that it has to be obtained through the path of generations."
IQ seems to be inherited from both parents, similar to height. A study found that mothers with low IQs and fathers with gifted IQs produced children with average IQ. Like a short mother and a tall father usually produce an average height child.
Burt concen¬
trated his attention on the children of mothers with IQs assessed at the low
grade of 70-85. For the purpose of analysis he considered in one group those
of their children whose fathers were of very low to medium ability (assessed at
IQ 65-100); another group consisted of the children whose fathers were of
high cognitive ability (assessed at IQ 120-145). but whose mothers belonged to
the group of low-grade IQ. There were 105 children in the first group. 67 in the
second. The children were subjected to a test of the Binet type. Those in the
first group showed a mean IQ of 88-6; in the second, 103-2. The difference in
IQ was thus 14-6 (standard error 21).
- Race, J. Baker, 1974, p. 461
So the formula for IQ seems similar to the formula when calculating the predicted height of children.
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