<p style="text-align: justify;">The surge of learners being immersed in computer game contexts for learning has instigated dialogue about the contextually appropriate collection of reliable and valid data to inform education-based decisions. The purpose of this article is to develop educational practitioners’ understanding of preliminary research work, and to inform educational researchers about design and reporting of preliminary research work, in the context of reported preliminary studies on Digital Game-Based Learning Interventions (DGBLIs). First a checklist of processes for the reporting of preliminary studies is provided. Second, a summary is offered of the characteristics of each type of preliminary study including the description, objectives, and methodology. Third, an example from peer-reviewed literature is identified of each type of preliminary study relevant to DGBLIs and conducted within the past five years. Evident from the examples selected, educational researchers and practitioners are best advised to recognize the characteristics of preliminary studies — pilot work, feasibility study, pilot study, pilot trial, and field test — to better inform DGBLIs before embarking on a full-scale study, and to meet the need of educational practitioners for concrete evidence about DGBLIs.</p>

Technology-enhanced learning (TEL) is a broad term to denote the incorporation of digital technology to mediate activities that support education. Educational researchers need to validate critical assumptions about any new system that involves TEL early and throughout its development course to make quick, informed, de-risked decisions about the progress of TEL. We introduce an assumption validation process for educational researchers to consider utilizing when evolving ideas or prototypes of TEL. We present a preliminary study conducted in Russia of a knowledge sharing (KS) training program using digital games to illustrate the proposed four-stage process. The first stage is listing the assumptions that apply to initiatives of TEL. The second is identifying the methods most useful for testing those assumptions. The third is executing tests on each of those assumptions. The last stage is determining assumption validity. In the illustrative study, a single pilot trial was considered the appropriate approach to validate the assumptions selected in the first stage. We found that determining assumption validity requires testing many of the assumptions individually and in aggregate. Educational researchers can use this assumption validation process to assess the potential of TEL in a variety of settings before investing resources into its further development.