The Statement is untrue.
Some African Americans in the United States use African American English (AAE), which is not slang, as a mode of communication. Since the 1960s, it has been one of the most often discussed English dialects. Research on AAE has addressed a variety of issues, including its genesis, its legitimacy and position as a dialect or language, and its consequences on reading. Research from the 1960s supported the validity of AAE by demonstrating that it was not a speech defect employed by speakers from culturally underprivileged backgrounds. The first research, including that of William Labov and Marvin Loflin, demonstrated that AAE had distinct patterns of sentence structure, sound combinations, meaning, and vocabulary.
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