+
+Jensen—
+> the test must measure, in addition to the construct it purports to measure,
+some other characteristic or factor that is completely uncorrelated with the construct and on which the major group, on the average, exceeds the minor group A typical example is the case in which the major and minor groups differ in their native language. A person’s native language is presumably not correlated with the construct of intelligence. If the test involves the native language of the major group exclusively and the minor group has a different language, the test will most likely be positively biased in favor of the major group. In other words, the test is measuring something (in this case a specific language) in addition to the construct that it purports to measure, which condition favors the major group
+
+https://en.wikipedia.org/wiki/Black_Intelligence_Test_of_Cultural_Homogeneity
+
+Draw-a-Horse Pueblo
+