摘要：This study outlines the development of the Design Log Instrument (DLI),which is intended for use in identifying moments of abstraction as evidence ofSTEM content knowledge transfer. The DLI prompts participants to bereflective during technological/engineering design challenges. During thedevelopment of this instrument, a three-phase, multiple-case, embedded designwas used. Three distinct phases accommodated the collection and analysis ofdata necessary for this investigation: (1) pilot case study, (2) establishing contentvalidity, and (3) establishing construct validity. During Phase 3, data from theDLI were collected at each of seven work sessions from two undergraduatedesign teams working through different engineering problems. At the end ofPhase 3, a comparison of abstractions found in DLI responses and observationdata (audio/video transcripts) indicated the extent to which the DLIindependently reflected the abstractions revealed in observations (audio/videotranscripts). The results of this comparison showed that the DLI has the potentialto be 68% reliable in revealing abstracted knowledge.
