Despite coverage of materials development principles in the applied linguistics literature, principled production of open textbooks has not received attention. To address this gap and demonstrate the interdisciplinary potential of materials development research, the authors drew upon concurrent verbalization and interview data they collected while…

Different theoretical and empirical taxonomies of reading and listening comprehension (RC, LC) are available in the literature. Most of language tests and tasks in English as foreign or second language (EFL/ESL) coursebooks are based on the classifications of reading and listening subskills (micro-skills) offered in theory. However, these…