. Author manuscript; available in PMC: 2008 May 13.

Published in final edited form as: Dev Neuropsychol. 2005;28(1):507–537. doi: 10.1207/s15326942dn2801_4

TABLE 5.

Correlations Between Vigilance Performance and Standard Tests of Cognitive Function in Mild Alzheimer’s Disease (AD) and in Control Participants

	Overall Vigilance		Vigilance Decrement
Test	Controls^a	AD^b	Controls^a	AD^b
General cognitive function
WFSIQ	.15	.54	.35	−.03
WVIQ	−.02	.43	.10	−.03
WPIQ	−.04	.65^*	−.14	−.008
WVSSS	−.04	.50	.02	.03
WPSSS	.24	.73^*	.31	.07
Attention
Stroop Words	.22	.45	−.004	−.008
Stroop Color	.008	.44	.03	−.22
Stroop Interference	.09	−.01	.10	−.09
Trail Making A (time)	−.27	−.61	−.09	−.05
Trail Making B (time)	.03	−.60	.11	.17

Note. Overall vigilance represents the mean level of global sensitivity for the degradation level 2.50. Vigilance decrement represents the decrement at degradation level 2.50; the vigilance decrement was calculated as the difference between mean sensitivity on Blocks 5 and 6 versus mean sensitivity on Blocks 1 and 2. WFSIQ = Wechsler Adult Intelligence Scale (WAIS) Full Scale IQ; WVIQ = WAIS Verbal IQ; WPIQ = WAIS Performance IQ; WVSSS = WAIS Verbal Sum of Scaled Scores; WPSSS = WAIS Performance Sum of Scaled Scores.

n = 20.

n = 10.

p < .05.