Sonntag, 25. November 2012

Jobs and Intelligence:

One notable finding is that the correlation between IQ and job status is just about as high if the IQ test is given in childhood, decades before people enter the job market, as it is among young adults who are taking an intelligence test after years of education. For example, in a small but elegant longitudinal study of childhood intelligence and adult outcomes, the boys and girls in the sample were given IQ  tests in childhood and then their job statuses and levels of schooling were measured on standard scales after they were at least 26 years old. The IQ scores they got when they were 7 or 8 years old were about as correlated with the status level of their adult jobs as their adult IQ would have been. Inasmuch as childhood IQ is more correlated with status than completed education, as in some studies, the thesis that IQ scores really just measure educational level is weakened.
Charles Murray, TBC, 1994

Educational, Cognitive and 'Cultural' Similarity:

Put people with greater educational and cognitive similarity together, and you have the makings of greater cultural similarity as well. When one spouse is a college graduate in the top centiles of cognitive ability and the other is a high school graduate with modesty above-average cognitive ability, they are likely to have different preferences in books and movies, different ways of spending their free times, different friends, and differences in a dozen other aspects of life.
Charles Murray, Coming Apart, 2012

Samstag, 24. November 2012

The spread of TV:

In 1950 barely 10 percent of American homes had television sets, but by 1959, 90 percent did, probably the fastest diffusion of a technological innovation ever recorded. (The spread of Internet access will rival TV's record but probably not surpass it.)
Robert Putnam, Bowling Alone, 2000

Donnerstag, 22. November 2012

Life Outcomes, Intelligence & Self-Control:

When psychologists isolate the personal qualities that predict "positive outcomes" in life, they consistently find two traits: intelligence and self-control.
Roy Baumeister and John Tierney, Willpower, 2012

Dienstag, 20. November 2012

Großeltern-Enkel-Verwandtschaft:

Etwa 3500 Personen weltweit verdanken ihren gesamten Chromosomensatz jeweils bloß drei von vier Großeltern.
[Berücksichtigt man die Effekte des Crossing-overs tragen jene Personen dennoch Gene von allen vier Großeltern in sich.]

Dienstag, 13. November 2012

Intelligence and Marriage Institutions:

It turns out that the institution of marriage (monogamy vs. polygyny) is very strongly associated with the average intelligence of the population. Across 187 nations, average intelligence and the degree of polygyny is correlated at r = - .615. Even net of such relevant factors and potential confounds as economic development, average level of education, geographical location, Muslim religion, and income inequality, the average intelligence of a population is very strongly associated with the level of polygyny in society. The more intelligent the population, the less polygynous (and the more monogamous) it is.
Kanazawa, The Intelligence Paradox, 2012
[Wie lässt sich jener Sachverhalt erklären?]