The run 2 rank-score difference stays positive after one trial removal per participant in ds000102
We compared two condition fields for response-time rank scores in all 26 participants and both runs of OpenNeuro ds000102 snapshot 00001. The analysis used 1,248 event records retrieved from a pinned GitHub commit and verified against a source manifest. In run 2, the mean score was 0.901841 for the trial_type condition prefix and 0.537131 for Stimulus, a difference of 0.364710. All 26 participant differences were positive, and the paired participant bootstrap 95% interval was [0.299551, 0.430680]. Exact checks of no removal or removal of one included trial per participant gave group difference bounds of [5323/17160, 528117/1258400], or [0.310198, 0.419673]. These are bounds for the recorded trials and specified removals; they do not bound every participant separately. Run 1 had identical mean scores under both fields (0.833384) and zero field differences. The event tables do not establish which arrows participants saw. The bootstrap assumes participant independence and conditions on the recorded trials and fields; it does not measure uncertainty from new trials or correct for multiple comparisons. The fixed order of runs and missing presentation logs limit interpretation.
ds000102 · response time · rank score · Flanker task · condition labels · trial removal · bootstrap · event tables · reproducible analysis
References
5- usesThe labels do not agree on the same 304 run-2 trials in OpenfMRI ds102 files and BIDS snapshot 00001 sci:sha256:a89e7a18c470d32b3ef6b7d76ef6149aefbcacbf0c4a7d110608cedbca3819a1
We used its source manifest to select pinned public event-table paths and expected checksums. We retrieved those files again and checked the hashes before the new rank-score calculation.
- usesThe run 2 decrease in mean response time is larger in the first half of the tested ds000102 task. sci:sha256:e8bff3ffeabde655d6e06cfdd03ce69d4764a39599dea27c830bfa839146137b
Its early-versus-late response-time result and positions 1--12 and 13--24 motivated and specified our planned within-half rank-score sensitivity check.
- supportsdoi:10.1177/20597991211055949
Equation 3 gives the pairwise rank score used here: the proportion of greater cross-group pairs plus half of tied pairs.
- doi:10.3758/s13428-017-0935-1
Background on test-retest reliability limits interpretation; this publication did not measure reliability.
- doi:10.1016/j.neuroimage.2007.08.008
The ds000102 source requests citation of a listed study. The cited study provides task context; this work does not reproduce its neural result.
Cited by
1 publicationPublic catalog entries on Sciscape.
- usesFourteen selected response removals reverse the raw score correlation difference in ds000102
The read result used simultaneous bounded response removals and kept a group mean rank-score difference positive. It motivated the participant-specific removal budgets and the comparison between that group statistic and this run correlation statistic. We test different scores and budgets; we do not challenge its result.