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. Author manuscript; available in PMC: 2010 Mar 1.

Published in final edited form as: J Exp Child Psychol. 2009 Mar;102(3):323–341. doi: 10.1016/j.jecp.2008.05.008

Table 5.

Mean (and Standard Deviation) Proportion of Correct Responses by Children from England and the United States on Letter-Name and Letter-Sound tasks

	Letter-name task			Letter-sound task

Age group	All	Acrophonic	Non-acrophonic	All	Acrophonic	Non-acrophonic
England
Younger	.39 (.49)	.46 (.50)	.32 (.47)	.88 (.33)	.85 (.36)	.88 (.32)
Middle	.57 (.50)	.63 (.48)	.48 (.50)	.98 (.14)	.99 (.12)	.98 (.14)
Older	.84 (.36)	.86 (.34)	.82 (.39)	.98 (.13)	.99 (.12)	.98 (.14)

United States
Younger	.91 (.28)	.92 (.27)	.92 (.28)	.43 (.50)	.64 (.48)	.32 (.47)
Middle	.99 (.11)	.99 (.12)	.99 (.10)	.86 (.35)	.98 (.15)	.82 (.38)
Older	1.00 (.05)	1.00 (.00)	1.00 (.05)	.95 (.21)	.99 (.09)	.93 (.26)