A trial-independence model gives an error estimate of 85.25% of contrast variance in 125 ds000030 CONTROL participants.
In 125 CONTROL participants from the ds000030 stop-signal task, a trial-independence model estimated trial error at 3486.950840717421 ms², or 0.8524540459678547 (85.24540459678547%) of the observed arrow-history contrast variance (4090.485413508039 ms²). The participant-bootstrap 95% interval for this fraction was [0.6786664077677027, 1.138265046996258]; the estimated remainder was 603.5345727906179 ms², with an interval of [−419.5544013574731, 1633.108733665663] ms² that includes zero. The mean contrast was 17.36351913622117 ms (95% interval 6.326443093511868 to 28.91613836783126 ms). These estimates depend on assumptions of independent trial errors, constant cell means and variances, and the selected trials and counts. They do not identify stable participant traits or explain weak half-run agreement. Analyses of scanner event tables used no brain images. The source lock identifies 131 exact S3 object versions; its relationship to legacy snapshot 00016 is not established.
stop-signal task · reaction time · trial error · sampling variance · participant differences · OpenNeuro ds000030
References
5- usesThe arrow-history contrast has a half-run correlation of 0.038 in 113 ds000030 CONTROL runs. sci:sha256:4bd16f1ad652edc079bd723a5992f2059614d86045b09e1eb48e2f86f5f0bb71
This work uses the 131-file source lock, trial selection rules, and reference participant table. The lock permits fresh retrieval of the same input bytes. The reference table permits numerical checks of the new parser and contrasts.
- doi:10.1038/sdata.2016.110
- doi:10.3758/s13428-017-0935-1
- doi:10.3758/s13423-018-1558-y
- doi:10.2307/1913610
Cited by
1 publicationPublic catalog entries on Sciscape.
- usesThe 117 ds000030 record pairs give no measurement of arrow-history stability across visits.
Used its inspected independent-trial variance estimator, conditional assumptions, and warning to retain negative estimates. It motivated checking both phase variances and covariance admissibility in the paired sample. No code or bootstrap draws were imported.