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. Author manuscript; available in PMC: 2022 Aug 30.
Published in final edited form as: Prog Neuropsychopharmacol Biol Psychiatry. 2021 Feb 18;110:110283. doi: 10.1016/j.pnpbp.2021.110283

Table 2.

Neuropsychological Test Performance: Comparison Between Pediatric Probands with OCD, Unaffected Siblings and Parents

Probands
 Siblings
 Parents
 Parents vs Probands
 Siblings vs Probands
 Overall
n Mean SD n Mean SD n Mean SD t p d t p d R2 ICC
Wechsler Digit Symbol 102 −.25 1.25 76 .04 1.15 163 .45 .78 5.37 <.01* −.71 1.67 .10 −.24 .08 .09
Wechsler Symbol Search 102 .08 1.13 78 .25 1.09 164 .26 .83 1.49 .14 −.19 1.04 .30 −.16 .01 .12
Wechsler Block Design 102 .25 1.07 78 .36 .94 161 .30 .89 .38 .71 −.05 .77 .44 −.11 <.01 .10
CVLT Short Delay 98 .30 1.08 75 −.30 1.37 163 −.37 1.41 −4.77 <.01* .51 −3.01 <.01* .49 .05 .19
CVLT Long Delay 97 .05 1.15 78 −.39 1.38 163 −.68 1.41 −5.20 <.01* .55 −2.19 .03* .35 .05 .16
CVLT List A Trial 1 99 .27 1.13 78 −.10 1.11 164 −.87 1.01 −8.27 <.01* 1.08 −2.25 .03* .34 .18 .01
Wechsler Digit Span 102 .22 1.01 78 .22 1.04 164 .45 .95 1.68 .09 −.24 .02 .98 <.01 .01 .10
Wechsler Arithmetic 102 .38 1.12 77 .35 1.05 162 .43 .85 .47 .64 −.05 −.19 .85 .03 <.01 .24
WCST Failure to Maintain 64 .17 1.36 51 .35 1.34 106 .28 1.05 .68 .50 −.10 .75 .45 −.13 <.01 .05
WCST Trials to Com. 1ST Cat. 64 −.65 1.97 50 −.74 1.95 105 −.44 1.31 −.73 .47 .13 .22 .82 −.05 .01 .00
WCST % Perseverative Errors 63 −.07 1.29 50 .15 1.14 106 .39 1.23 2.41 .02 −.37 1.10 .27 −.18 .03 .12
WCST Categories Completed 64 −.14 1.40 51 −.29 1.36 106 −.02 1.01 .56 .57 −.10 −.60 .55 .11 .01 .01
WCST Number of Trials 63 −.09 1.30 51 .18 1.16 106 .60 1.06 3.57 <.01* −.59 1.09 .28 −.21 .06 .00
Stroop Word 99 −.31 .71 75 −.37 .73 163 −.06 .83 2.51 .01* −.31 −.55 .59 .09 .03 .15
Stroop Color 99 −.63 .82 76 −.52 .70 163 −.28 .68 3.67 <.01* −.47 .95 .34 −.14 .04 .11
Stroop Color-Word 99 −.48 .85 75 −.30 .85 163 .05 .85 5.06 <.01* −.63 1.40 .16 −.21 .07 .13
Stroop Interference 99 −.12 .64 74 .04 .69 163 .14 .67 3.13 <.01* −.40 1.63 .10 −.24 .03 .03

Note: OCD, obsessive-compulsive disorder; CVLT, California verbal learning test; WCST, Wisconsin card sorting test, Trials to Com. 1ST Cat., trials to complete first category; WISC, Wechsler intelligence scale for children; n, sample size included in the analysis; SD, standard deviation; d, Cohen’s d effect size; ICC, interclass correlation; Mean scores reflect standard scores derives from norms (Z scores)