Results 1 to 5 of 5

Thread: 40% of IQ Differences Among Preschoolers Stems from Genetic Differences

  1. #1
    Germania incognita
    „Friend of Germanics”
    Skadi Funding Member
    Hersir's Avatar
    Join Date
    Apr 2007
    Last Online
    @
    Status
    Available
    Ethnicity
    Norwegian
    Ancestry
    Norway
    Subrace
    Nordid
    Y-DNA
    I2b1
    mtDNA
    J2a1a1b
    Country
    Norway Norway
    State
    South Trondelag South Trondelag
    Location
    Norway
    Gender
    Age
    34
    Zodiac Sign
    Pisces
    Family
    Single adult
    Politics
    Nationalist
    Posts
    6,156
    Thanks Thanks Given 
    1,268
    Thanks Thanks Received 
    974
    Thanked in
    463 Posts

    40% of IQ Differences Among Preschoolers Stems from Genetic Differences

    40 percent of IQ differences among preschoolers stems from genetic differences but that heritability rises to 60 percent by adolescence and to 80 percent by late adulthood

    Decades of genetics research have shown...that people are born with different hereditary potentials for intelligence and that these genetic endowments are responsible for much of the variation in mental ability among individuals. Last spring an international team of scientists headed by Robert Plomin of the Institute of Psychiatry in London announced the discovery of the first gene linked to intelligence. Of course, genes have their effects only in interaction with environments, partly by enhancing an individual's exposure or sensitivity to formative experiences. Differences in general intelligence, whether measured as IQ or, more accurately, as g are both genetic and environmental in origin--just as are all other psychological traits and attitudes studied so far, including personality, vocational interests and societal attitudes. This is old news among the experts. The experts have, however, been startled by more recent discoveries.
    Continues http://alfin2100.blogspot.com/2012/0...-world-so.html

    "Make strong old dreams lest our world lose heart." -Ezra Pound



    Support Skadi forum



  2. #2
    Datter av Norge
    „Friend of Germanics”
    Funding Membership Inactive
    Ælfrun's Avatar
    Join Date
    Nov 2010
    Last Online
    @
    Status
    Available
    Ethnicity
    Norwegian-Canadian
    Gender
    Posts
    1,056
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    16
    Thanked in
    16 Posts
    It appears that the effects of environment on intelligence fade rather than grow with time. In hindsight, perhaps this should have come as no surprise
    What is that saying?
    As we get older, we become wiser
    of corse it does because we learn through our negative and positive experiences. We constantly learn every day, so obviously our IQ will be higher as we age.
    Many people still mistakenly believe that social, psychological and economic differences among families create lasting and marked differences in IQ.
    This is most certainly untrue because people mostly learn how to adapt to their surroundings no matter what the situation is. Children often heal from trauma in childhood. If IQ is mostly genetic, I hope this does not mean I will turn into my mother
    All things must come to the soul from it's roots, from where it is planted. The that is beside the running water is fresher, and gives more fruit.

  3. #3
    Senior Member

    Join Date
    Sep 2011
    Last Online
    Sunday, May 7th, 2017 @ 01:10 AM
    Ethnicity
    English
    Ancestry
    English, Scottish, Irish.
    Country
    England England
    State
    Lancashire Lancashire
    Gender
    Age
    35
    Politics
    Pan-European Nationalist
    Religion
    European Paganism
    Posts
    81
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    1
    Thanked in
    1 Post
    Quote Originally Posted by Ælfrun View Post
    It appears that the effects of environment on intelligence fade rather than grow with time. In hindsight, perhaps this should have come as no surprise
    What is that saying?
    It’s due to something called gene amplification. The effects of some genes get stronger as we age. This is why the IQs of identical twins get more and more similar over time. It’s also presumably why there’s more of a difference in cognitive ability between an adult human and an adult chimp, than between a baby human and a baby chimp.

  4. #4
    Senior Member
    Horagalles's Avatar
    Join Date
    Mar 2005
    Last Online
    Saturday, August 25th, 2012 @ 02:53 PM
    Ethnicity
    Germanic
    Subrace
    mainly UP
    Country
    South Africa South Africa
    Gender
    Politics
    Natural Order
    Posts
    1,376
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    11
    Thanked in
    11 Posts
    Intelligence is certainly genetic to the core. And the gap in difference shows that the genetic differences in this field have actually be weighted stronger then the rest of genetic information.

    Quote Originally Posted by Ælfrun View Post
    ...
    This is most certainly untrue because people mostly learn how to adapt to their surroundings no matter what the situation is. Children often heal from trauma in childhood. If IQ is mostly genetic, I hope this does not mean I will turn into my mother
    Genetically you got just 50% from your mother. And then mendels laws may also play a role.
    "And God proclaims as a first principle to the rulers, and above all else, that there is nothing which they should so anxiously guard, or of which they are to be such good guardians, as of the purity of the race. They should observe what elements mingle in their offspring;..." Plato Politeia

  5. #5
    Senior Member

    Join Date
    Jan 2011
    Last Online
    Saturday, August 18th, 2012 @ 03:10 AM
    Status
    Available
    Ethnicity
    Anglo-American
    Ancestry
    England, Germany, Ireland, Scotland
    Country
    United States United States
    Gender
    Posts
    154
    Thanks Thanks Given 
    0
    Thanks Thanks Received 
    3
    Thanked in
    3 Posts
    There is an earlier discovery of the gentic link in 2006.

    http://www.ncbi.nlm.nih.gov/sites/en...&term=16801949
    The synaptosomal-associated protein of 25 kDa (SNAP-25) gene plays an integral role in synaptic transmission, and is differentially expressed in the mammalian brain in the neocortex, hippocampus, anterior thalamic nuclei, substantia nigra and cerebellar granular cells. Recent studies have suggested a possible involvement of SNAP-25 in learning and memory, both of which are key components of human intelligence. In addition, the SNAP-25 gene lies in a linkage area implicated previously in human intelligence. In two independent family-based Dutch samples of 391 (mean age 12.4 years) and 276 (mean age 37.3 years) subjects, respectively, we genotyped 12 single-nucleotide polymorphisms (SNPs) in the SNAP-25 gene on 20p12-20p11.2. From all individuals, standardized intelligence measures were available. Using a family-based association test, a strong association was found between three SNPs in the SNAP-25 gene and intelligence, two of which showed association in both independent samples. The strongest, replicated association was found between SNP rs363050 and performance IQ (PIQ), where the A allele was associated with an increase of 2.84 PIQ points (P=0.0002). Variance in this SNP accounts for 3.4% of the phenotypic variance in PIQ.
    Me:

Similar Threads

  1. Genetic Differences Between Ulster Scots?
    By Sefo in forum Population Genetics
    Replies: 11
    Last Post: Wednesday, June 20th, 2012, 06:31 AM
  2. Genetic Differences Between Five European Populations
    By Roderic in forum Population Genetics
    Replies: 0
    Last Post: Monday, October 18th, 2010, 03:47 AM
  3. IQ Differences Within Europe and the Genetic Aspect
    By Hanna in forum Psychology, Behavior, & Neuroscience
    Replies: 8
    Last Post: Tuesday, May 11th, 2010, 10:55 PM
  4. Differences Between US and French/German Law (Insight to Cultural Differences)
    By SwordOfTheVistula in forum Law, Ethics, & Morals
    Replies: 4
    Last Post: Saturday, January 19th, 2008, 08:10 AM
  5. New Evidence That Race Differences in Cancer Are Genetic
    By Mac Seafraidh in forum Medical & Behavioral Genetics
    Replies: 1
    Last Post: Tuesday, August 31st, 2004, 08:39 AM

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •