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. 2009 Sep 18;36(1):112–125. doi: 10.1093/schbul/sbp093

Table 4.

Mean weighted effect sizes for individual tasks for AP and control differences

Test Studies, n Control, n AP, n d 95% CI z P Q test P Bias
Symbol coding 6 505 184 1.02 0.67–1.37 5.74 <.001 .01 0.88
Stroop 7 434 223 0.97 0.66–1.27 6.15 <.001 .01 0.16
Category fluency 9 528 290 0.96 0.71–1.20 7.68 <.001 .01 0.54
Verbal memory immediate 9 561 278 0.95 0.65–1.25 6.21 <.001 .001 0.33
WCST per 8 393 258 0.95 0.69–1.27 5.87 <.001 .001 0.06
CPT 6 208 133 0.93 0.73–1.13 8.76 <.001 .69 0.92
Trail making A 9 344 236 0.91 0.75–1.07 11.22 <.001 .90 0.89
Verbal memory delayed 10 587 296 0.90 0.60–1.20 5.94 <.001 .001 0.57
WCST cat 7 311 193 0.87 0.58–1.17 5.87 <.001 .02 0.41
Trail making B 10 392 288 0.85 0.70–0.99 11.32 <.001 .53 0.21
Digit span backwards 6 392 288 0.83 0.60–1.07 6.88 <.001 .15 0.22
Letter fluency 9 499 291 0.69 0.53–0.86 8.17 <.001 .27 0.06
Visual memory 4 125 90 0.68 0.43–0.93 5.27 <.001 .67 0.56
IQ 5 281 133 0.44 0.10–0.77 2.54 .01 .05 0.45
Premorbid IQ 8 536 190 0.31 0.09–0.52 2.76 .005 .20 0.55

Note: Abbreviations are explained in the first footnote to table 1. d, effect size (Cohen D).