This post half implies that the points made have reached a consensus within the field, that unnamed scientists have come around to these views. That remains unproven. Notably absent from the paper's authors are any of the people who had defended The Bell Curve, such as Arthur Jensen, Philippe Rushton, Linda Gottfredson, or any of the other signatories to the document 'Mainstream Science on Intelligence.'[1]

I suspect one could find papers contradicting each of these points from very well respected scientists within the field. I haven’t the time to review each one right now, but as for the narrowing of the black-white difference, Rushton and Jensen question it:

>“Dickens and Flynn (2006, this issue) challenge our hypothesis. They claim that ‘‘no one can really trace the Black-White IQ gap in the United States back to its origins’’ (p. 913) and that in the United States, Blacks have gained ‘‘4 to 7 IQ points on non-Hispanic Whites between 1972 and 2002’’ (p. 913). But to maintain that ‘‘no one can really trace the . . . gap back to its origins,’’ Dickens and Flynn had to sidestep our citation of Shuey’s (1966) review of the literature, which shows that Black White IQ differences in the United States have remained at 15 to18 points, or 1.1 standard deviations, for nearly a century. For example, she found 23,596 Black draftees in World War I (1917)had an IQ of 83 (vs. 100 for Whites), with a Black overlap of the White mean of 13%. For recent data, we cited the meta-analysis by Roth, Bevier, Bobko, Switzer, and Tyler (2001), which also shows a mean difference of 1.1 standard deviations (range of 0.38 to 1.46 standard deviations, depending on the test’s g loading), based on 6,246,729 individuals from military, corporate, and higher-education samples. Roth et al. found any narrowing of the gap was ‘‘either small, potentially a function of sampling error . . . or nonexistent for highly g loaded instruments’’ (p. 323, italics added).

>To claim a 4- to 7-point gain for Blacks, Dickens and Flynn chose three independent tests showing medium gains (the Wechsler, Stanford-Binet, and Armed Forces Qualiﬁcation tests) and relegated to their Appendix B four or more tests showing lesser gains. They excluded the Wonderlic Personnel Test, which they acknowledge showed a gain of only 2.4 points for Blacks between 1970 and 2001. (Dickens and Flynn suggest that more ‘‘high quality’’ Whites than Blacks had taken the test.) They excluded the Kaufman Assessment Battery for Children (K-ABC), which Murray (2005) described as showing a loss of 1 IQ point for Blacks between 1983 and 2004. (Dickens and Flynn say the data contained an inﬂated standard deviation.) They excluded the very g-loaded Woodcock-Johnson test, which Murray (2005; whom they cite) described as showing the conventional gap of 1.05 standard deviations for the third (2001) standardization sample. (Dickens and Flynn say the Blacks were an unrepresentative ‘‘subsubsample.’’) They also excluded the Differential Ability Scale, which in Lynn’s (1996) analysis (which they cite) showed a maximum gain of 1.83 IQ points for Blacks between 1972 and 1986. (Dickens and Flynn say the sample lacked ‘‘quality.’’) To be compelling, however, researchers must take the totality of available evidence into account (Gottfredson, 2005). Even the tests Dickens and Flynn did analyze do not support their conclusion. The alleged gain of 4 to 7 points is from a ‘‘projected’’ trend line based on a small IQ rise per year multiplied by more years than are in the data using unclear procedures (see the additional appendix in the Web site they refer to). Simple arithmetic applied to the data in their Table A1 shows a mean gain for Blacks of only 3.44 IQ points, from 86.44 to 89.88

If you’d like to see an accurate survey of what experts in the field believe, you’ll have to settle for a 25 year old survey, albeit one very well done.[3]

Tl;dr the points made represent one side of the field, and are not a consensus of intelligence researchers.

[1]http://en.wikipedia.org/wiki/Mainstream_Science_on_Intellige...
[2] http://menghusblog.files.wordpress.com/2012/01/the-totality-...
[3] http://en.wikipedia.org/wiki/The_IQ_Controversy,_the_Media_a...