Here’s a really informative article that details how autism diagnoses are still tied to socio economic profiles of people. While reported autism cases have risen dramatically among blacks and hispanics in the past 10 years or so per the article, so that they are closer to white and white affluent categories, studies cited show there is no correlation between income or race when it comes to autism diagnosis. There is no bias towards race or income. A time back it was felt autism was reported at a higher rate or was more prevalent in affluent whites because of the higher likelihood of submitting to early diagnosis but that has been dispelled, according to the article. Bottom line is, early intervention and detection should become the norm for everyone of all races and we need to get the word out.
Source: Spectrum Autism Research News