. Author manuscript; available in PMC: 2017 Jul 7.

Published in final edited form as: J Child Lang. 2008 Feb;35(1):77–98. doi: 10.1017/s0305000907008264

TABLE 3.

Mean proportion of attempted trials correct for American-English infants as a function of word difficulty

	Easy	Moderate	Difficult
Trials attempted
M	0.86	0.73	0.79
SD	0.18	0.29	0.25
Attempted trials correct
M	0.67	0.64	0.49
SD	0.26	0.23	0.21
Total trials correct
M	0.58	0.47	0.40
SD	0.25	0.25	0.22

NOTE: The proportion of individual infants performing significantly above chance across attempted trials was 0.60 for easy words, 0.62 for moderately difficult words and 0.28 for difficult words. Individual proportions correct ranged from 0.00 to 1.00.