Contact-Induced Change in Igbo: A Variationist Sociolinguistic Study of Morphosyntactic Variables in Aba and Asaba Urban Communities

This study presents a variationist sociolinguistic investigation of contact-induced morphosyntactic change in Igbo as spoken in the urban communities of Aba, Abia State, South East Nigeria, and Asaba, Delta State, South South Nigeria. Igbo is a major Niger-Congo language with extensive contact with English, Nigerian Pidgin, and, in Asaba, with Yoruba and Edo, yet the variationist documentation of ongoing morphosyntactic change in urban Igbo remains underdeveloped. The research employs a Labovian variationist methodology, constructing a stratified speaker sample of 240 participants (120 per city) balanced across age, gender, and occupational class. Sociolinguistic interviews were conducted and the recordings were transcribed and coded for ten target morphosyntactic variables including object pronoun form, aspect marker selection, relative clause strategy, and negation patterns. The analysis uses variable rule (VARBRUL) analysis to identify linguistic and social predictors of variant selection, and apparent-time analysis to identify ongoing change trajectories. Findings document distinct urban Igbo dialect formation processes in each city, with Aba Igbo showing convergence toward basilectal Pidgin-influenced features and Asaba Igbo exhibiting contact features from Yoruba grammatical structures in pronoun and negation domains. The study makes an original contribution to contact linguistics and dialectology in Nigeria and provides the most detailed variationist dataset yet available for urban Igbo morphosyntax. Keywords: contact-induced change, Igbo, variationist sociolinguistics, urban dialect, morphosyntax.