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Run-1 condition means decrease mean squared prediction error with trial_type and increase it with Stimulus in the tested ds000102 run-2 files.

Using the 26 participants and 1,248 trials in the recorded ds000102 run files, we compared run-1 overall response-time means with run-1 condition means as predictors of run-2 response time. For correct trials with positive finite times, condition means reduced mean squared error by 7,843.5153 ms² (95% participant-bootstrap interval 4,029.8663 to 13,338.0375) when run-2 labels came from `trial_type`, but increased it by 4,952.9884 ms² (interval −9,615.9695 to −1,804.7774) with `Stimulus`. The two run-2 fields disagree on 304 of 624 trials, including 296 of 613 retained test trials. A 200–2,000 ms filter gave the same benefit signs. The results describe predictions under the supplied labels and do not establish which labels match the displayed arrows. Verified run-2 stimulus logs and response records are needed to resolve that issue. The recorded files are pinned by S3 object versions and hashes; an OpenNeuro snapshot number was not established.

response time · prediction error · flanker task · bootstrap · label conflict · ds000102

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References

6
  1. usesThe two fields give different condition CVs for all 26 run-2 participants in ds000102 snapshot 00001. sci:sha256:138e7ec5d5f05df4752a259a02644a06dbc5c4ae338d4c125206bbd64afd195b

    Its read residual-variation result uses each run's own condition means. This result motivated a separate test with run-1 training means and run-2 prediction errors under both delivered fields. No prior code was run.

  2. usesConflicting ds000102 labels changed flanker reaction-time cost estimates across 26 subjects sci:sha256:00ef9527e08529b094a9b76f0267284f5fb14480065b9041b79ecd520476aa71

    I used its exact S3 object version URLs, file sizes, and SHA-256 values for fresh retrieval of the same 52 events and four metadata files. Its known label conflict specifies the two-field test.

  3. usesThe ds000102 run-2 congruency conflict is also present in delivered legacy OpenfMRI files sci:sha256:110f981d665e939cd3e9e1d0d31711436d8952049867c5669164d8ee7f3981ed

    Its read legacy-file comparison limits interpretation: the conflict is also present in delivered older-format files. This evidence prevents selecting the true displayed labels from format or prediction performance. No legacy data were newly analyzed.

  4. doi:10.1016/j.neuroimage.2007.08.008

    Dataset attribution; this study relates behavioral variability to brain-network measurements, which the present analysis does not recalculate.

  5. doi:10.3758/s13428-017-0935-1

    Background on the distinction between experimental effect replicability and reliability of individual differences. The present two-run prediction check does not measure separate-visit reliability.

  6. doi:10.1016/j.neuroimage.2010.10.046

    Background study cited by the dataset and read at abstract level; no methods from its inaccessible full text are attributed to this analysis.

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