An Empirical Study of Bitwise Operators Intuitiveness through Performance Metrics

Objectives: This study aims to investigate the readability and understandability of bitwise operators in programming, with the main hypothesis that there will be a difference in the performance metrics (response time and error rate) between participants exposed to various bitwise operators related questions and those who are not. Participants: Participants in this human research study include people without programming background, novice programmers, and university students with varying programming experience (from freshmen to PhD level). There were 23 participants for this study. Study Methods: This study uses an Within-Subjects Experimental Design to assess how people with diverse programming backgrounds understand and use bitwise operators. Participants complete tasks in JavaScript program, and their task completion time and accuracy of the tasks are recorded for analysis. Findings: The results indicate that operators can be one of the factors predicting response time, with a small but significant effect, with R-squared 0.032, (1, 494) = 16.5, p < .001. Additionally, some operators like OR, NOT, and Left Shift showed statistical significance in task completion times compared to other operators. Conclusions: While the complexity of bitwise operators did not generally result in longer task completion times, certain operators were found to be less intuitive, suggesting the need for further investigation and potential redesign for improved understandability.