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. Author manuscript; available in PMC: 2022 Jan 1.
Published in final edited form as: Cogn Neuropsychiatry. 2020 Dec 11;26(1):35–54. doi: 10.1080/13546805.2020.1859360

Table 2.

Number of Items Necessary to Achieve Satisfactory Levels of Criterion Validity (Relative to Full-Form) and Short-Full Correlation.

Criterion Validity
Test & Phase Convergent CGAS SES Psychosis Age Full-Short Correlation

CPT letters 69 (77%) 42 (47%) 55 (61%) 48 (53%) 53 (59%) 41 (46%)
CPT numbers 55 (61%) 40 (44%) 48 (53%) 43 (48%) 39 (43%) 35 (39%)
NBACK 0-back 29 (97%) 28 (93%) 29 (97%) 28 (93%) 25 (83%) 26 (87%)
NBACK 1-back 23 (77%) 27 (90%) 24 (80%) 25 (83%) 18 (60%) 23 (77%)
NBACK 2-back 24 (80%) 24 (80%) 24 (80%) 24 (80%) 23 (77%) 24 (80%)

Note. CGAS = Children’s Global Assessment Scale; SES = socio-economic status; CPT = Continuous Performance Task.

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