Propositional Idea Density in the Writing of Native Speakers and Asian Learners of English: A Corpus-Based Contrastive Interlanguage Analysis

The present study is a contrastive interlanguage analysis of propositional idea density in the written language of native English speakers and Asian learners of English. The study adopted a quantitative method to analyse the ICNALE written essays v2.4 using CPIDR v5.1 software. The study aimed to identify the level of propositional idea density in the writing of English native speakers and Asian learners of English and to examine the effect of the type of English, the theme type, the proficiency level and nationality on propositional idea density. The study is one of the very few studies about propositional idea density in ESL and EFL contexts. Many statistical analyses were performed on CPIDR results using jamovi v2.3 software, and the results of the tests revealed that the propositional idea density in native speakers’ essays was higher than that in Asian learners’ essays. Moreover, the results showed that there was a statistically significant difference among all the participants based on the theme types of part-time jobs and smoking, among native speakers based on occupation type (students, teachers, others) and among Asian learners of English based on the type of English proficiency level and nationality. The findings of the study showed that propositional idea density is a psycholinguistic index of the amount of presupposed knowledge language users have on a specific topic. In other words, propositional idea density is a window to language users’ schemata. Additionally, the findings of the study can be considered an insightful contribution to contrastive interlanguage analysis.