This dataset, associated with a public OSF project by Helene Ackermann, focuses on real-time cognitive-affective dynamics during failure feedback in a technology-based learning task. It includes three files: a CSV data file (95.2 kB), a DAT data file (80.7 kB), and an Mplus model input file (model.inp, 964 B), captured on March 25, 2026. The data likely contain time-series measures of cognitive and affective responses to failure feedback, intended for analyzing dynamic interactions within a learning environment. The project aims to understand how learners process errors in real-time to inform educational technology design.