. Author manuscript; available in PMC: 2014 Mar 1.

Published in final edited form as: Dev Sci. 2013 Mar;16(2):269–286. doi: 10.1111/desc.12024

Table A2.

Correlations Between Processing Speed Tasks and Working Memory Composite Score in the Young Adult Sub-Sample of Experiment 2

	Working Memory
Box Completion	.076
Digit Copying	.101
Digit-Symbol Substitution	.144
Letter Comparison	.483^*

Note—The most complex processing speed measure (Letter Comparison), but not simpler speed measures, load on working memory in young adults. n = 24;

p < .05;

^**

p < .01. Working Memory composite = average of paragraph recall, Rey-AVLT learning, card rotations (hits-FAs), digit span backward, and coordinative – sequential complexity z scores.