Cognitive Research: Principles and Implications

Table 2 Proportion of responses during the short-answer task in YAs and OAs in Waves 1 and 2 (standard error of the mean in parentheses)

From: Ecological validity of don’t remember and don’t know for distinguishing accessibility- versus availability-based retrieval failures in older and younger adults: knowledge for news events

	Wave 1				Wave 2
	Correct	DR	DK	Commission error	Correct	DR	DK	Commission error
YAs	.40 (.03)	.13 (.02)	.39 (.03)	.08 (.01)	.27 (.03)	.17 (.02)	.46 (.03)	.09 (.01)
OAs	.28 (.02)	.21 (.02)	.33 (.02)	.17 (.02)	.29 (.02)	.23 (.02)	.31 (.02)	.16 (.01)
p-value	.005	.002	.111	< .001	.625	.010	< .001	< .001

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