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The genetically engineered high IQ Caesar with his pleiotropically lightened eyes in “Rise of the Planet of the Apes”

From Outside In:

Bell Curve of the Apes

Another outrageous study completely overlooks the problem of stereotype threat.

That study as reported in Nature:

Chimpanzee IQ starts in the genes

Study shows that about half of the animals’ intellect is heritable.

Sara Reardon

10 July 2014

For chimps, nature and nurture appear to contribute equally to intelligence.

Smart chimpanzees often have smart offspring, researchers suggest in one of the first analyses of the genetic contribution to intelligence in apes. The findings, published online today in Current Biology, could shed light on how human intelligence evolved, and might even lead to discoveries of genes associated with mental capacity.

A team led by William Hopkins, a psychologist at Georgia State University in Atlanta, tested the intelligence of 99 chimpanzees aged 9 to 54 years old, most of them descended from the same group of animals housed at the Yerkes National Primate Research Center in Atlanta. The chimps faced cognitive challenges such as remembering where food was hidden in a rotating object, following a human’s gaze and using tools to solve problems.

A subsequent statistical analysis revealed a correlation between the animals’ performance on these tests and their relatedness to other chimpanzees participating in the study. About half of the difference in performance between individual apes was genetic, the researchers found.

In humans, about 30% of intelligence in children can be explained by genetics; for adults, who are less vulnerable to environmental influences, that figure rises to 70%. Those numbers are comparable to the new estimate of the heritability of intelligence across a wide age range of chimps, says Danielle Posthuma, a behavioural geneticist at VU University in Amsterdam, who was not involved in the research.

[From Outside In] “Hopkins et al conclude (un-shockingly):”

Finally, from an evolutionary standpoint, the results reported here suggest that genetic factors play a significant role in determining individual variation in cognitive abilities, particularly for spatial cognition and communication skills. Presumably, these attributes would have conferred advantages to some individuals, perhaps in terms of enhanced foraging skills or increased social skills, leading to increased opportunities for access to food or mating … These individuals would have then potentially had increased survival and fitness, traits that would have become increasingly selected upon during primate evolution, as has been postulated by a number of theorists, going all the way back to Darwin …

 
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  1. Retired says:

    Will Sara Reardon, Hopkins et al
    Be cast in to the darkness of Voldemort?

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  2. carol says:

    Oh, they all know that already. They just act like they don’t know, because drawing attention to heritability is Not Helpful.

    Read More
  3. @Priss Factor
    From the Boomer bible.

    The book of apes.

    http://theboomerbible.com/tbb4.html

    That’s pretty wild. What is it?

    Read More
    • Replies: @Priss Factor
    I have no idea. Back in the 90s, a friend owned one and read it while we driving to the Fourth of July fireworks show.
    There's a passage about the green apes being killed by red apes, red apes being killed by purple apes and etc. and my stoned-out friend couldn't stop laughing. So, it stuck in my mind.
  4. Harold says:

    Half of a chimp’s intelligence is in their genes, the other half depends on a combination of, how many words they heard as infants, whether they were played Mozart as babies, and how many books there were in their childhood home.

    Read More
  5. Priss Factor [AKA "Skyislander"] says: • Website
    @Steve Sailer
    That's pretty wild. What is it?

    I have no idea. Back in the 90s, a friend owned one and read it while we driving to the Fourth of July fireworks show.
    There’s a passage about the green apes being killed by red apes, red apes being killed by purple apes and etc. and my stoned-out friend couldn’t stop laughing. So, it stuck in my mind.

    Read More
  6. David says:

    In the same year that the Bell Curve was published another book called The Intelligence of Dogs was published. The Bell Curve claimed that sub saharan africans are on average less intelligent than other races. The dog book, that afghan hounds were the least smart of 100 breeds. At the beginning of 1994, the current Webster’s Collegiate Dictionary was the 9th edition. In this dictionary, the page with “afro” also had “afghan hound” on it. Illustrating the word “afro” was a smiling black man with an afro. Illustrating the dog was a happy-looking afghan hound. In the 10th edition of Webster’s Collegiate Dictionary, published in 1994, the dog picture has been removed and the guy with the afro is looking very somber. Coincidence?

    On this study, it’d be interesting to see what mental trait might be negatively correlated with smarts. What’s the trade off?

    Read More
    • Replies: @Steve Sailer
    Dog breeds can change in intelligence fairly quickly. When I was a kid, collies seemed plausible for saving Timmy from the well. Now, apparently, they are about as dumb as Afghans (the dogs).
  7. @David
    In the same year that the Bell Curve was published another book called The Intelligence of Dogs was published. The Bell Curve claimed that sub saharan africans are on average less intelligent than other races. The dog book, that afghan hounds were the least smart of 100 breeds. At the beginning of 1994, the current Webster's Collegiate Dictionary was the 9th edition. In this dictionary, the page with "afro" also had "afghan hound" on it. Illustrating the word "afro" was a smiling black man with an afro. Illustrating the dog was a happy-looking afghan hound. In the 10th edition of Webster's Collegiate Dictionary, published in 1994, the dog picture has been removed and the guy with the afro is looking very somber. Coincidence?

    On this study, it'd be interesting to see what mental trait might be negatively correlated with smarts. What's the trade off?

    Dog breeds can change in intelligence fairly quickly. When I was a kid, collies seemed plausible for saving Timmy from the well. Now, apparently, they are about as dumb as Afghans (the dogs).

    Read More
    • Replies: @Anonymous
    That book on dogs measured intelligence as ability/willingness to obey commands. I.e., it's only a very crude proxy to what we typically think of intelligence (even in dogs). And what is the evidence that the unquestionably smart collies are now as dumb as Afghans? I doubt it very much!
  8. Dennis Dale says: • Website

    http://en.wikipedia.org/wiki/Boomer_bible

    The idea apparently is a scientific history transposed into the form of the Old Testament. “Genesis” becomes “Kinesis”, for example, by which I assume he means the Big Bang.

    Read More
  9. Anonymous says: • Disclaimer
    @Steve Sailer
    Dog breeds can change in intelligence fairly quickly. When I was a kid, collies seemed plausible for saving Timmy from the well. Now, apparently, they are about as dumb as Afghans (the dogs).

    That book on dogs measured intelligence as ability/willingness to obey commands. I.e., it’s only a very crude proxy to what we typically think of intelligence (even in dogs). And what is the evidence that the unquestionably smart collies are now as dumb as Afghans? I doubt it very much!

    Read More
  10. Anonymous says: • Disclaimer

    Study shows that about half of the animals’ intellect is heritable.

    But humans are special – they are not subject to natural laws. Human intelligence “may be” nearly completely determined by environment and the neural processes that underlie intelligence are not subject to evolutionary forces.

    For how much longer the enormous resources will be wasted on research that demonstrates something was already obvious many decades ago?

    Read More
  11. HA says:

    When I was a kid, collies seemed plausible for saving Timmy from the well. Now, apparently, they are about as dumb as Afghans

    The rough-haired collie suffered a one-two genetic knockout from both below and above. The popularity of Lassie encouraged puppy-mill breeding for the masses that selected for nothing more than cosmetics and fecundity. At the same time, high-end show breeders introduced Russian wolfhounds (borzoi) into the standard, while likewise failing to select for shepherding talent, furthering diminishing the breed’s intelligence. Sighthounds like the borzoi and the Afghan hound are in general independent-minded and hard to obedience-train (or, as some would put it, dumb). That is partly by design, given that they are bred to run beyond their master and capture prey on their own, as opposed to the intricate command parsing required of shepherd dogs.

    But there are still some actual shepherd collies around, just as there are still Dachsunds who can terrorize something other than a mail carrier or backyard squirrels.

    Read More
  12. Flemur says:

    The previews to this movie seem to indicate that the chimps achieved just-about-human intelligence, not significantly higher or lower; their brains are far too small for that to happen.

    MSM fun:

    Baby chimps given human love ace IQ tests*

    and yet

    Chimpanzees raised by humans no cleverer

    *Bogus headline; the article then says:
    “Orphaned infant chimpanzees that received attentive, nurturing care from human surrogate mothers were found to be more intellectually advanced than the average human baby when both groups were compared at the age of nine months, according to a new study published in the latest issue of Developmental Psychobiology.”

    Nine-month old dogs are also smarter than nine-month old human babies.
    And a five-minute-old alligator is smarter than a five-minute-old human or a five-minute-old dog.

    Dumber final result = faster early development.

    Read More
  13. Conventional wisdom: Pay no attention to the corcordance of results! (Between this study, human twin and adoption studies, and genome-wide association studies in multiple species that ALL show 50% or greater heritability in intelligence)

    Instead, spend your time coming up with ever-sillier ad hoc excuses: The Equal Environments Assumption is wrong! Or, Stereotype Threat! Or, something something…Social Construct!

    On the plus side, it’s now become pretty clear who the real “Creationists” are.

    Read More

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