. Author manuscript; available in PMC: 2013 Apr 23.

Published in final edited form as: J Int Neuropsychol Soc. 2009 Jul 2;15(5):650–661. doi: 10.1017/S1355617709990385

Table 2.

Standardized regression coefficients for linear age relations on individual cognitive variables, WAIS-IV/WMS-IV data

	Only age	Unique age

Ability
Variable
Gc
Vocabulary	.10^*	.16^*
Information	.03	.04^*
Similarities	−.12^*	−.16^*
Comprehension	−.04	−.06^*
Gf
Block Design	−.47^*	.05^*
Matrix Reasoning	−.53^*	−.06^*
Visual Puzzles	−.48^*	.02
Picture Completion	−.40^*	.04
Figure Weights	−.34^*	−.04
WM
Digit Span Backward	−.21^*	.20^*
Digit Span Seq.	−.33^*	.09^*
Letter Number Seq.	−.17^*	.10^*
Symbol Span	−.57^*	−.24^*
Spatial Addition	−.44^*	−.32^*
Speed
Symbol Search	−.55^*	−.01
Coding	−.55^*	−.02
Cancellation	−.20^*	.06
Visual Memory
Vis. Repro. – Imm	−.48^*	.13^*
Des. Total – Imm	−.42^*	−.11^*
Verbal Memory
Verb. PAssoc – Imm	−.65^*	−.33^*
Log. Mem. – Del	−.36^*	.37^*

p< .01.

Note. The column labeled “Only age” contains the simple correlation with age as portrayed in the left panel of Figure 1. The column labeled “Unique age” contains the standardized regression coefficient for age after considering relations on the hierarchical structure, as portrayed in the right panel of Figure 1.