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. Author manuscript; available in PMC: 2015 Jul 1.
Published in final edited form as: Neuropsychologia. 2014 Apr 18;59:47–56. doi: 10.1016/j.neuropsychologia.2014.04.007

Table 2.

Accuracy at target locations

Young CDR 0 CDR 0.5
Position
Variable		 6 8 10 6 8 10 6 8 10
Hit rate
M .92 .91 .92 .81 .83 .82 .67 .66 .56
SD .09 .12 .11 .20 .17 .21 .22 .21 .22
False alarm rate
M .03 .02 .01 .07 .03 .04 .11 .13 .13
SD .04 .04 .02 .07 .05 .04 .09 .10 .09
d ’
M 3.3 3.2 3.4 2.6 2.9 2.8 1.8 1.7 1.4
SD .54 .69 .53 .95 .76 .84 .91 .80 .79

Accuracy data at each of the three possible target positions. CDR = Clinical Dementia Rating CDR 0 = no dementia; CDR 0.5 = very mild Alzheimer’s disease