The effect of first language transfer on second language acquisition and learning has been a major theoretical concept in second language research and pedagogy since the 1950s. In order to give a historical perspective, the authors offer a brief presentation of some of the major topics from the broad spectrum of issues that have been examined by…

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…