The Effects of Postlingual Deafness in Yoruba Studies on Language Acquisition [SOLA] 47 Introduction: In this groundbreaking study, we explore the effects of prolonged hearing loss on language acquisition and its impact on the survival of humanity. The book delves into the phenomenon of postlingual deafness, where individuals who were once fluent speakers of Yoruba, a Nigerian language, have experienced long-term hearing loss, yet continue to speak the language from memory and through lip reading. Our research uncovers the surprising fact that language loss occurs when speakers remain deaf for an extended period, rather than the commonly assumed notion that hearing loss leads to speech deterioration. This discovery sheds light on the crucial role of language acquisition in preserving cultural heritage and the importance of understanding the technological process of developing modern knowledge for the survival of humanity. Chapter 1: The Phenomenon of Postlingual Deafness In this chapter, we examine the concept of postlingual deafness and its prevalence among Yoruba speakers.

''