. Author manuscript; available in PMC: 2006 Mar 23.

Published in final edited form as: Neuropsychol Dev Cogn B Aging Neuropsychol Cogn. 2005 Dec;12(4):340–358. doi: 10.1080/138255890968466

Table 2.

Multivariate and Univariate ANOVAs for the Age x Task Interactions in Dual Task Costs for the Language Sample Measures, Walking and Tapping Rates, and the Time on Task Measures for the three Walking Tasks.

	Age by Task Interaction
	F	df	p	η²
Fluency MANOVA	3.792	8,180	<.001	.144
MLU	8.096	2,92	.001	.150
WPM	8.355	2,92	<.001	.154
% Grammatical	<1.0	2,92	.673	.003
% w/out Fillers	5.820	2,92	.004	.112
Complexity MANOVA	11.879	4,184	<.001	.205
MCU	25.299	2,92	<.001	.355
D-Level	4.687	2,92	.012	.092
Content MANOVA	7.368	4,184	<.001	.138
TTR	<1.0	2,92	.70	.007
P-Density	17.122	2,92	<.001	.271
Performance MANOVA	1.154	3,184	.344	.097
Walking Rate	1.112	2,92	.333	.024
Time-on-Task	3.782	2,92	.026	.076

Note. MLU = mean length of utterance; WPM = word per minute speech rate; % Grammatical = percentage of grammatical sentences; % w/out Fillers = percentage of utterances without fillers; MCU = mean clauses per utterance; D-Level = Developmental Level; TTR = type-token ratio; P-Density = propositional density.