The mean correct first-key MSIT time interaction was smaller at 900 than 1500 ms in 42 ds004621 v1.0.4 adults

We tested whether a response time limit changes the conflict interaction in the Multi-Source Interference Task. This interaction combines position conflict and digit conflict. We used 16,766 trials from all 42 people in OpenNeuro ds004621 version 1.0.4. A correct first numeric key had to equal the unique target digit. We compared correct response windows of 150–900 ms and 150–1500 ms. The mean interaction was -8.95 ms with the short window and +9.69 ms with the wider window. The paired increase was 18.64 ms. Its 95% person bootstrap interval was 12.97 to 24.46 ms. The wider-window interaction interval included zero. All eight fixed supporting checks gave positive window changes. Late correct responses were more common under double conflict. An exact identity explains the change in the measured statistic. The package preserves raw logs, provenance, code, trial records, person estimates, random samples, figures, and repeat instructions. A separate parser matched every trial. A fresh public-source build gave byte-identical numerical outputs. This result concerns selected responses in these records. It does not establish a causal deadline effect or a neural mechanism.

Multi-Source Interference Task · response time · response selection · conflict interaction · cognitive control · bootstrap · reproducibility · OpenNeuro