An evaluation of the phonological features of Nigerian sign language in Deaf communities
- Project Research
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- NGN 5000
Background of the study
Nigerian Sign Language (NSL) is the primary means of communication within Deaf communities across Nigeria. NSL exhibits its own phonological system, distinct from spoken languages, involving parameters such as handshape, movement, orientation, location, and non-manual signals (Umeh, 2023). These phonological features are critical in distinguishing signs and conveying meaning. This study evaluates the phonological features of NSL by examining its structural components through video analysis and expert elicitation. Given Nigeria’s linguistic diversity, NSL has been influenced by local cultures and may incorporate regional variations. Research indicates that the evolution of NSL is closely linked to community identity and social integration (Okafor, 2024). However, there is a paucity of comprehensive studies that detail the internal phonological structure of NSL, particularly in relation to its consistency across different Deaf communities. This study aims to fill that gap by providing a systematic analysis of NSL phonology, thereby contributing to language standardization efforts, educational program development, and Deaf cultural preservation.
Statement of the problem
Despite its central role in Deaf communication, Nigerian Sign Language remains under-documented, particularly regarding its phonological structure. The lack of systematic research on NSL’s phonological features hampers effective curriculum development, interpreter training, and language standardization initiatives (Afolabi, 2023). Inconsistent sign production across different communities further complicates communication and threatens the standardization of NSL. This study addresses the need for a detailed phonological analysis of NSL, aiming to document its core features and provide a basis for improving Deaf education and cultural representation.
Objectives of the study:
- To document the phonological parameters of NSL.
- To analyze variations in sign production across Deaf communities.
- To propose standardization recommendations for NSL.
Research questions:
- What are the key phonological features of NSL?
- How do these features vary across regions?
- What measures can improve NSL standardization?
Research hypotheses:
- NSL exhibits systematic phonological features across Deaf communities.
- Regional variations significantly affect sign production.
- Standardization efforts will enhance NSL’s educational utility.
Significance of the study (100 words):
This study is significant as it provides a thorough evaluation of NSL phonological features, contributing to Deaf education and language policy. The findings will assist in the development of standardized curricula and interpreter training programs, thereby strengthening cultural identity and communication within Deaf communities (Umeh, 2023).
Scope and limitations of the study:
This study focuses on NSL phonology within selected Deaf communities in Nigeria and relies on video analysis and expert interviews.
Definitions of terms:
- Nigerian Sign Language (NSL): The visual-gestural language used by Nigeria’s Deaf community.
- Phonological Features: Structural components that distinguish signs, such as handshape and movement.
- Deaf Communities: Groups of individuals who primarily use sign language for communication.
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