The imgur photo came from the Bell Curve by Charles Murray. There was some controversy about parts of the book, but the fact that blacks score one standard deviation lower on IQ tests was never disputed. You can also find this by just googling "race and SAT scores" "race and LSAT scores". Look at the official results put out by those organizations, and you will find that on every single test the average black score is about one standard deviation lower than the average white score.
After the Bell Curve was published a 52 professors from around the country, representing a majority of those responding, signed a statement on the mainstream science on intelligence, saying:
> "The bell curve for whites is centered roughly around IQ 100; the bell curve for American blacks roughly around 85; and those for different subgroups of Hispanics roughly midway between those for whites and blacks. IQ is strongly related, probably more so than any other single measurable human trait, to many important educational, occupational, economic, and social outcomes. Intelligence tests are not culturally biased against American blacks or other native-born, English-speaking peoples in the U.S. Rather, IQ scores predict equally accurately for all such Americans, regardless of race and social class. Source: https://www.udel.edu/educ/gottfredson/reprints/1997mainstrea...
Again, the difference in average cognitive test scores is simply not in dispute.
After the Bell Curve was published a 52 professors from around the country, representing a majority of those responding, signed a statement on the mainstream science on intelligence, saying:
> "The bell curve for whites is centered roughly around IQ 100; the bell curve for American blacks roughly around 85; and those for different subgroups of Hispanics roughly midway between those for whites and blacks. IQ is strongly related, probably more so than any other single measurable human trait, to many important educational, occupational, economic, and social outcomes. Intelligence tests are not culturally biased against American blacks or other native-born, English-speaking peoples in the U.S. Rather, IQ scores predict equally accurately for all such Americans, regardless of race and social class. Source: https://www.udel.edu/educ/gottfredson/reprints/1997mainstrea...
Again, the difference in average cognitive test scores is simply not in dispute.