Exploration of Science Identity. Akin to sense of belonging, we collected responses to a qualitative short response question asking students to first define a scientist or engineer (depending on their major), and then explain whether they identified as meeting this definition themselves. Six students' responses to these questions, separated by major, are highlighted in Table . All responses are available in the Supplementary Information (Table ). Chemistry-major respondents regardless of TSMP participation tended to identify themselves as scientists, while the majority of chemical engineering-major respondents did not identify themselves as engineers.