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. Author manuscript; available in PMC: 2009 Aug 1.
Published in final edited form as: Cognition. 2008 May 2;108(2):466–476. doi: 10.1016/j.cognition.2008.03.008

Table 2.

Mean age and age ranges as well as mean vocabulary and vocabulary ranges per group listed by age in months.

Size Identical Stimuli Similar Stimuli
2 Mean age = 25.6 Mean age = 26.0
Age range: 22-35 Age range: 22-36
Mean vocabulary: 334 Mean vocabulary = 296
Vocabulary range: 49-668 Vocabulary range: 72-530
4 Mean age = 27.2 Mean age = 25.6
Age range: 22-35 Age range: 22-33
Mean vocabulary: 374 Mean vocabulary: 429
Vocabulary range: 121-658 Vocabulary range: 80-667