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Correction: Bringing the Cognitive Estimation Task into the 21st Century: Normative Data on Two New Parallel Forms

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There are errors in Table 6, the last paragraph of the Experiment 1 Cognitive Estimation Task (CET) section, and Tables S6 and S7. Please view the correct paragraph and tables here:

The distribution of the error scores for version A of the CET adjusted for age, gender and education is as follows: M  =  4.11, Mdn  =  4.00, SD  =  3.32, minimum  =  -2, maximum  =  21, interquartile range  =  4.00. The distribution of the CET scores for version B adjusted for age, gender and education is: M  =  3.99, Mdn  =  4.00, SD  =  3.50, minimum  =  -3, maximum  =  18, interquartile range  =  4.00. Table 6 provides the percentiles of the distribution of the CET scores adjusted for age, gender and education.

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Table 6. Percentiles of the distribution of the adjusted error scores on the parallel versions of the CET. The possible scores range from zero (best performance) to 27 (worst performance).

https://doi.org/10.1371/journal.pone.0104483.t006

Supporting Information

Table S6.

The correction grid with the points to add or subtract from the raw scores to obtain adjusted scores for version A of the CET. For the combinations not reported, the corrections that should be applied to the raw CET scores to achieve adjusted scores are below the table.

https://doi.org/10.1371/journal.pone.0104483.s001

(DOCX)

Table S7.

The correction grid with the points to add or subtract from the raw scores to obtain adjusted scores for version B of the CET. For the combinations not reported, the corrections that should be applied to the raw CET scores to achieve adjusted scores are below the table.

https://doi.org/10.1371/journal.pone.0104483.s002

(DOCX)

Reference

  1. 1. MacPherson SE, Wagner GP, Murphy P, Bozzali M, Cipolotti L, et al. (2014) Bringing the Cognitive Estimation Task into the 21st Century: Normative Data on Two New Parallel Forms. PLoS ONE 9(3): e92554