An Integrated Approach to Effectiveness Research in CALL
Chapter 5 - A model for evaluating CALL. Part 2: Qualitative and quantitative measures 115
Chapter 5 A model for evaluating CALL Part 2: Qualitative and quantitative measures A blended agenda for empirical ef fectiveness research A decade earlier than her seminal work in providing a theory-driven jus- tification for using SLA as the foundational theory for ‘teaching, test- ing and research’ in CALL (2001), Chapelle had, together with Jamieson already set out clear guidelines for improved internal and external validity in research on CALL ef fectiveness (1991). While her 2001 work was to focus particularly on qualitative, judgmental studies of CALL task appro- priateness, this earlier article focused on improving the rigour in empirical studies that set out to measure the impact of CALL on learning outcomes, and employ statistical techniques to that end. Her findings in this regard have also contributed an important element in the metric route of our method. Two other authors, Pederson and, more recently, Felix have also contributed to the establishing of a clear agenda for CALL ef fectiveness research. The relevant contribution of these three authors will now be considered and integrated into the evaluative approach, as well as applied in the Case Studies. Common themes running through the work of these three authors, whose work spans the last three decades of CALL, is the demand for sound construct validity in research design, strong internal and external validity, rigour in the isolating, controlling and analysis of variables, and veracity and sobriety in the reporting of findings. Some of Pederson’s guidance for improved ef fectiveness research has already, in...
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