THE IMPACT OF REFERENTIAL COHESION ON WRITING QUALITY IN PAKISTANI ESL LEARNERS: A CORPUS-BASED STUDY

Abstract

This corpus-based study explores how referential cohesion influences writing quality in Pakistani undergraduate essays. The dataset contains 100 essays collected from undergraduate students from universities across Punjab (Pakistan). Expert raters score each essay with a rubric that reflects IELTS band descriptors. Deep cohesion features are extracted from Coh-metrix software which gives features related to cohesion and coherence.  Coh-Metrix 3.0 computes noun, argument, and content-word overlap, capturing sentence-level and paragraph-level links. SPSS correlations shows strong negative relations between dense adjacent repetition and other score descriptors. The effect is highest for the Coherence and Cohesion and Lexical Resource descriptors. High-scoring essays minimize repetition of the discussed  features  between sentences. They achieve cohesion through the use of pronouns, synonyms, and broader thematic references. A small amount of paragraph-level overlap supports Task Response only when paired with lexical variety. The results show that good academic writing depends on using a thoughtful mix of different reference words, not on repeating the same ones over and over. Pedagogical interventions such as synonym-substitution exercises, theme-rheme mapping, and heat-map-guided revision are effective in helping ESL writers replace mechanical cohesion with purposeful textual links. These strategies, in turn, contribute to improved writing grades.