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Given the increased importance of communication, teamwork, and critical thinking skills in the computing profession, we have been exploring studio-based instructional methods, in which students develop solutions and iteratively refine them through critical review by their peers and instructor. We have developed an adaptation of studio-based instruction for computing education called the pedagogical code review (PCR), which is modeled after the code inspection process used in the software industry. Unfortunately, PCRs are time-intensive, making them difficult to implement within a typical computing course. To address this issue, we have developed an online environment that allows PCRs to take place asynchronously outside of class. We conducted an empirical study that compared a CS 1 course with online PCRs against a CS 1 course with face-to-face PCRs. Our study had three key results: (a) in the course with face-to-face PCRs, student attitudes with respect to self-efficacy and peer learning were significantly higher; (b) in the course with face-to-face PCRs, students identified more substantive issues in their reviews; and (c) in the course with face-to-face PCRs, students were generally more positive about the value of PCRs. In light of our findings, we recommend specific ways online PCRs can be better designed.
Hundhausen et al. (Wed,) studied this question.
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