This full paper examines how internships shape computer science (CS) students' self-perceptions of competence, confidence, and professional success. While internships bridge academic and professional practice, their relationship with the impostor phenomenon (IP), perceived role legitimacy, team integration, and the use of generative AI (GenAI) tools remains underexplored, especially regarding CS students holding high-responsibility academic roles (e.g., teaching assistants). Guided by the Social Cognitive Career Theory (SCCT), we studied undergraduate CS teaching assistants (n=40) at a large public university in the southeast of the United States using mixed methods. Our findings revealed three analytic domains concerning students' impostor feelings, internship success, and GenAI use, operationalized through seven qualitative themes and supporting statistical analyses. Students reported high impostor feelings (M=65.7, max=90), with 52.5% classified as high IP, 42.5% intermediate, and 5.0% low. Internship success was rated positively (mode = 4; out of a 5-point Likert Scale), with success attributed primarily to skill development (49.3%) and organizational support (36.2%). While most students were allowed to use GenAI tools (65.8%), usage was infrequent, and in-house tools were preferred. Finally, a significant negative correlation was observed between IP and internship success (r_s=-0.341, p<.05). These findings provide valuable insights for both CS educators and policymakers to improve internship preparation, address IP, and develop ethical GenAI integration guidelines to enhance students' well-being and retention.
Keywords: Computer Science, Internship Experience, Impostor Phenomenon, Generative AI, Self-Perception
http://orcid.org/0009-0004-8197-6239
Georgia Institute of Technology
[biography]
http://orcid.org/0000-0002-3024-1257
Georgia Institute of Technology
[biography]
The full paper will be available to logged in and registered conference attendees once the conference starts on June 21, 2026, and to all visitors after the conference ends on June 24, 2026