The Flynn Effect has not proven to have a top to it. It has been shown that conscripts in Norway and Denmark are not the same now as then. And that immigrants from third world hell holes bring their intelligence [and lack of it] with them and then breed like bunnies feeding on the yummy free welfare systems. Smart people bail out and migrate to somewhere, anywhere.
Where I am right now, I'm surrounded by Moslems and sub-Saharans [London, England]. The English who used to live in the houses here have long since migrated or died out, being replaced by less intelligent people. There have been built by government authorities hundreds of huge bludger apartments aka "council estates". There are many smart immigrants too but it's a numbers game and the hordes in the parks don't emanate intelligence. They are swarming with Moslems.
Eugenics is alive and well, with women choosing the better males and ditching the rest. That won't stop.
From Wikipedia:
<Possible end of progression[ edit]Jon Martin Sundet and colleagues (2004) examined scores on intelligence tests given to Norwegian conscriptsbetween the 1950s and 2002. They found that the increase of scores of general intelligence stopped after the mid-1990s and declined in numerical reasoning sub-tests. [35]
Teasdale and Owen (2005) examined the results of IQ tests given to Danish male conscripts. Between 1959 and 1979 the gains were 3 points per decade. Between 1979 and 1989 the increase approached 2 IQ points. Between 1989 and 1998 the gain was about 1.3 points. Between 1998 and 2004 IQ declined by about the same amount as it gained between 1989 and 1998. They speculate that "a contributing factor in this recent fall could be a simultaneous decline in proportions of students entering 3-year advanced-level school programs for 16–18-year-olds." [45] The same authors in a more comprehensive 2008 study, again on Danish male conscripts, found that there was a 1.5 points increase between 1988 and 1998, but a 1.5 points decrease between 1998 and 2003/2004. A possible contributing factor to the recent decline may be changes in the Danish educational system. Another may be the rising proportion of immigrants or their immediate descendants in Denmark. This is supported by data on Danish draftees where first or second generation immigrants with Danish nationality score below average. [46]
In Australia, 6–11-year-olds' IQ, as measured by the Colored Progressive Matrices, has shown no increase from 1975–2003. [47]
In the United Kingdom, a study by Flynn (2009) found that tests carried out in 1980 and again in 2008 show that the IQ score of an average 14-year-old dropped by more than two points over the period. For the upper half of the results the performance was even worse. Average IQ scores declined by six points. However, children aged between five and 10 saw their IQs increase by up to half a point a year over the three decades. Flynn argues that the abnormal drop in British teenage IQ could be due to youth culture having "stagnated" or even dumbed down. He also states that the youth culture is more oriented towards computer games than towards reading and holding conversations. Researcher Richard Gray, commenting on the study, also mentions the computer culture diminishing reading books as well as a tendency towards teaching to the test. [48] [49]
Lynn and Harvey have argued that the causes of the above are difficult to interpret since these countries have had significant recent immigration from countries with lower average national IQs.[ citation needed] Nevertheless, they expect that similar patterns will occur, or have occurred, first in other developed nations and then in the developing world as there is a limit to how much environmental factors can improve intelligence. Furthermore, during the last century there is a negative correlation between fertility and intelligence although there is not yet any conclusive evidence of the association between the two. They estimate that there has been a dysgenic decline in the world's genotypic IQ (masked by the Flynn effect for the phenotype) of 0.86 IQ points per decade for the years 1950–2000.
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