Presented by Albert Weideman to the ALTSIT team during the development of a two tier test of academic literacy at the Centre for Communication Skills of the Singapore Institute of Technology. For an explanation of the principles, see the  Top 14 design principles of language interventions.

For a full explanation of the above, see:

Weideman, A. 2017. Design principles and the future of applied linguistics. Responsible design in applied linguistics: theory and practice. Cham, Switzerland: Springer. https://link.springer.com/chapter/10.1007/978-3-319-41731-8_11