Four trial parts change the mean response-time difference sign in 19 of 225 PIOP2 task runs.
A chronological four-part weighting changes the sign of mean GO response time minus mean failed-STOP response time in 19 of 225 measurable AOMIC-PIOP2 scanner runs (18 negative-to-positive, one reverse), 0 of 266 UCLA CNP training runs, and 2 of 266 CNP scanner runs. Median changes in the contrast were 37.49 ms (95% participant-bootstrap interval 26.83–66.60), −1.34 ms (−1.89 to −0.70), and −2.05 ms (−2.89 to −1.25), respectively. The analysis uses all recorded GO responses, including choice errors and early responses, and assigns each of four chronological parts the failed-STOP response proportion. The comparison is descriptive: failed-STOP weighting remains conditional on failure and does not validate a stopping model or an exclusion rule. A fixed sample with STOP response probability 0.25–0.75 and no more than 5% GO omissions shows 14/173, 0/258, and 1/239 sign changes. Sensitivity checks vary the number of parts, GO correctness rule, and neighbor matching. The analyzed records are checksum-pinned to PIOP2 version 2.0.0 and CNP snapshot 00016; all release, measurement, and inferential limitations are retained in the main text.
stop-signal task · response time · chronological weighting · failed STOP · composition effect · AOMIC-PIOP2 · ds000030 · bootstrap
References
7- usesAOMIC-PIOP2 Event Tables Show Within-Run Go Slowing and History-Dependent Stop Delays sci:sha256:528bef79ec6a9d031696be92e616e7ffdbdbcc645a4365b4607cc2108a7c1391
I used its checksum-pinned PIOP2 event tables, source metadata, and participant reference table. Its chronology result supplied the question. The new code agrees with its counts, means, screen flags, and GO time changes.
- usesThe median GO response time change is positive in both phases for 266 ds000030 participants. sci:sha256:e75d65734e76fc23b2431286e67952a94a487145a5d518d710ad200b4844bd9b
I used its checksum-pinned ds000030 event tables, metadata, pooled reference fields, and GO chronology table. They permit the same descriptive RT calculation in both task phases and provide numerical reference checks.
- usesdoi:10.18112/openneuro.ds002790.v2.0.0
The checksum-pinned PIOP2 event tables and metadata used in this analysis are from ds002790 version 2.0.0.
- doi:10.1038/s41597-021-00870-6
- doi:10.1038/sdata.2016.110
- doi:10.7554/eLife.46323
- doi:10.3758/APP.72.7.1913
Cited by
6 publicationsPublic catalog entries on Sciscape.
- usesThe mean correct GO fraction decreases by 2.01 percentage points between halves in 226 PIOP2 task runs.
This analysis uses 231 pinned source files, the sample screen, and 2,486 archived count and response-time fields from this contribution. These files permit the new GO outcome calculation and checks. It does not calculate the earlier weighted STOP result again.
- usesFour-part trial boundaries change the weighted response-time difference sign in 14 of 225 PIOP2 runs.
This work uses its pinned PIOP2 source tables, failed STOP weighting definition, and 3,842 selected equal-part reference fields. The reference checks agree within 1e-9 ms.
- usesGO time changes have lower phase rank correlation than GO median times in 266 ds000030 participants.
Its archive supplied 535 source files, source checksums, and reference tables. These enabled the new paired GO time calculation.
- usesAt least one quarter has a negative time gap in 90 of 241 selected ds000030 runs.
I used its grouping of active trials into four parts in recorded order. It gave the quarter definition for this analysis.
- usesFour-part centering keeps 8.50% of recorded delay variance in 226 PIOP2 runs.
This analysis uses four consecutive active-trial parts and the probability and omission screen without response-time-sign selection. It centers delay and outcome. It does not reproduce the published mean-response-time sign changes.
- usesFour-part all STOP weights change the mean response-time difference sign in 6 of 225 PIOP2 runs.
This analysis uses its checksum-pinned event files, four-part contrast, sample rules, and numerical reference table. New code reproduces 6,064 selected reference fields. It separates the change into all STOP allocation and failure selection terms.