A mixed methods project was devoted to understanding college students' justification for digital piracy. The project consisted of two studies, a qualitative one and a quantitative one. Qualitative interviews were conducted to identify main themes in students' justification for digital piracy, and then the findings were tested in a quantitative manner using a different sample. This project thus proposes a model in which quantitative measures are guided by qualitative findings, and qualitative findings are in turn reexamined based on quantitative findings. This project offers a mixed methods model for theory testing in criminology.