Corpora-based Evaluations of the Language of Textbooks

Amid concerns over declining English language competencies, this research investigates the pedagogical efficacy of textbooks through retrospective, corpora-based evaluation. Traditional textbook selection has given way to more rigorous post-use analysis, made possible by powerful concordance software. By digitizing and analyzing Malaysian English textbooks, our study uncovers significant design flaws that hinder language acquisition. The analysis revealed vocabulary loads that are pedagogically inappropriate, coupled with poor repetition and recycling patterns, where many words appear only once. These findings suggest a disconnect between textbook construction and established principles of vocabulary learning. The inconsistencies, further highlighted by Parts of Speech analysis, point to a potential cause for the observed decline in student proficiency. This chapter details the methodology of these forensic linguistic analyses and discusses their profound implications. We offer evidence-based recommendations for curriculum planners and textbook writers, illustrating how corpus tools can be used to ensure that future textbooks are structured to effectively support and enhance the language learning process.