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When instructors want to design programming assignments to motivate their students, a common design choice is to have those students write code to make an artifact (e.g. apps, games, music, or images). The goal of this study is to understand the impacts of including artifact creation in a programming assignment on students’ motivation, time on task, and cognitive load. To do so, we conducted a controlled lab study with seventy-three students from an introductory engineering course. The experimental group created a simulation they could interact with – thus having the full experience of artifact creation – while the control group wrote the exact same code, but evaluated it only with test cases. We hypothesized that students who could interact with the simulation they were programming would be more motivated to complete the assignment and report higher intrinsic motivation. However, we found no significant difference in motivation or cognitive load between the groups. Additionally, the experimental group spent more time completing the assignment than the control group. Our results suggest that artifact creation may not be necessary for motivating students in all contexts, and that artifact creation may have other effects such as increased time on task. Additionally, instructors and researchers should consider when, and in what contexts, artifact creation is beneficial and when it may not be