Two GO rank rules give positive and negative SSRT changes after the same GO row removal in each of 121 ds000030 controls.

Upper and lower GO rank rules gave the same initial stop-signal reaction time (SSRT) scores in 126 controls from OpenNeuro ds000030, snapshot 1.0.0. After removal of one GO row, they gave different selected GO values for all 11,616 removals in the 121-person primary sample. Exactly one removed GO row in each selected run produced a positive SSRT change under the upper rule and a negative change under the lower rule. For all GO removals, the upper rule had 5,955 positive and 5,661 zero changes; the lower rule had 5,782 negative and 5,834 zero changes. Under delay rule A, STOP-row removal produced participant maxima above 20 ms in 8 upper-rule runs and 10 lower-rule runs. The lower rule is a sensitivity calculation, not a validated correction or preferred estimator. The results describe one 32-STOP-trial scanner run per participant; dependent row removals do not estimate probabilities or confidence intervals, and fixed later delays do not model behavior in a changed adaptive task.

stop-signal reaction time · SSRT · quantile · rank rule · row removal · sensitivity analysis · reaction time · OpenNeuro · ds000030 · reproducibility