. Author manuscript; available in PMC: 2011 May 1.

Published in final edited form as: Neuropsychology. 2010 May;24(3):300–315. doi: 10.1037/a0018274

Table 3.

Correlation between composite Mu/Sigma/Tau and Psychometric/Span/Personality Measures

	Healthy Old (CDR 0)			Very Mild DAT (CDR 0.5)			Overall Sample

	Mu	Sigma	Tau	Mu	Sigma	Tau	Mu	Sigma	Tau
Mini-Mental State Exam	−0.03	−0.06	−0.30^**	−0.13	−0.06	−0.35^**	−0.06	−0.05	−0.33^**
Forward Digit Span	−0.06	−0.04	−0.14^*	0.12	0.10	−0.11	0.02	0.02	−0.12^*
Backward Digit Span	0.00	−0.05	−0.20^**	0.07	−0.01	−0.24^*	0.03	−0.03	−0.20^**
Boston Naming	−0.05	−0.08	−0.15^*	−0.18	−0.20^{^}	−0.18	−0.08	−0.11^{^}	−0.16^*
Crossing Off	−0.19^**	−0.08	−0.20^**	−0.11	−0.14	−0.31^*	−0.15^*	−0.09	−0.21^**
Conscientiousness	−0.15^*	−0.15^*	−0.17^*	−0.05	0.00	−0.14	−0.12^*	−0.11^{^}	−0.15^*
Neuroticism	−0.01	0.05	0.07	0.04	0.05	0.28^*	0.02	0.06	0.15^*

Working Memory	−0.10	−0.12	−0.38^**	−0.02	0.04	−0.41^**	−0.07	−0.07	−0.38^**

Partial Correlation	0.05	−0.04	−0.17^**	0.03	0.07	−0.09	0.04	0.00	−0.15^**
Reading Span	−0.05	−0.09	−0.19^**	−0.01	0.02	−0.35^**	−0.04	−0.06	−0.24^**
Computation Span	−0.07	−0.07	−0.29^**	0.01	0.03	−0.28^*	−0.05	−0.05	−0.27^**
Rotation Span	−0.10	−0.14^*	−0.36^**	−0.16	−0.08	−0.33^**	−0.13^*	−0.13^*	−0.34^**

Episodic/Semantic Memory	−0.10	−0.08	−0.28^**	0.01	0.07	−0.43^**	−0.07	−0.04	−0.32^**

Partial Correlation	0.04	0.01	−0.01	0.08	0.12	−0.17	0.03	0.04	−0.05
Logical Memory	−0.09	−0.14^*	−0.15^*	0.05	0.05	−0.26^*	−0.05	−0.09	−0.17^**
WMS Associate Recall	−0.09	−0.11	−0.26^**	−0.11	0.02	−0.37^**	−0.10^{^}	−0.08	−0.29^**
WAIS Information	−0.04	−0.05	−0.27^**	0.16	0.15	−0.33^**	0.03	0.01	−0.28^**
Animal Fluency	−0.07	0.02	−0.17^*	−0.10	−0.01	−0.34^**	−0.09	0.00	−0.21^**

Processing Speed	−0.28^**	−0.17^**	−0.49^**	−0.25^*	−0.22^{^}	−0.59^**	−0.25^**	−0.18^**	−0.53^**

Partial Correlation	−0.27^**	−0.13^{^}	−0.35^**	−0.27^*	−0.28^*	−0.48^**	−0.24^**	−0.17^**	−0.40^**
WAIS Digit Symbol	−0.29^**	−0.25^**	−0.41^**	−0.23^{^}	−0.17	−0.53^**	−0.24^**	−0.21^**	−0.44^**
Word Fluency S-P	−0.26^**	−0.07	−0.35^**	−0.15	−0.17	−0.27^*	−0.20^**	−0.09	−0.31^**
Trail Making A	0.22^**	0.17^*	0.36^**	0.12	0.11	0.44^**	0.15^*	0.13^*	0.40^**
Trail Making B	0.05	0.03	0.35^**	0.25^*	0.22^{^}	0.53^**	0.11^{^}	0.09	0.44^**

^{^}

Note. p < .10,

p < .05,

^**

p < .01.

The Mu, Sigma and Tau were based on the averaged z-score of Mu, Sigma and Tau in Stroop, Simon and Switching tasks. The composite scores of episodic/semantic memory, working memory, and processing speed were based on the averaged z-score of psychometric/span variables under the subheadings. The “Partial Correlation” row under each subheading indicates the correlation between the composite score in one domain (e.g., processing speed) and Mu/Sigma/Tau after controlling for the scores in other two domains (e.g., working memory and episodic/semantic memory). All correlation analyses for older adults and very mild DAT individuals were controlled for age and those for overall samples were controlled for age and CDR status.