The body of research on CALL tasks and topics grows daily; however, there are still a number of areas that are underrepresented in the literature. While there are many gaps in the CALL research to address, this article specifically focuses on eight gaps, chosen because of their perceived...

While it is assumed that the alternative with a larger profit is preferred to that with a smaller profit according to the traditional cost-benefit (linear) model, it is demonstrated that the lower discount accompanied by a price of zero is preferred to the larger discount without a price of...