According to the General Social Survey, whites and blacks generally do not believe that race differences should be attributed to inborn disability. But, more revealingly, the proportion of whites who believe that race differences are due to inborn disability has been significantly decreased over time.
Here are the data.
[RACDIF2] DIFFERENCES DUE TO INBORN DISABILITY
266. On the average (negroes/blacks/African-Americans) have worse jobs, income, and housing than white people. Do you think these differences are: b. Because most (negroes/blacks/African-Americans) have less in-born ability to learn?
Since most whites do not believe in inborn differences and the white-black gap in intelligence has not been reduced, the “race stigma” theory must be discarded.