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. Author manuscript; available in PMC: 2012 Jan 1.
Published in final edited form as: J Exp Child Psychol. 2010 Jul 31;108(1):44–60. doi: 10.1016/j.jecp.2010.06.007

Table 3.

Means (and Standard Deviations) for Children’s Elicited Imitation Performance over Time

Age Point
Elicited Imitation
Performance		 18 Months 24 Months 30 Months
Baseline
 Actions 0.42 (0.38) 0.70 (0.47) 1.37 (0.65)
 Pairs 0.02 (0.09) 0.11 (0.21) 0.30 (0.27)
Immediate
 Actions 2.34 (0.58) 4.34 (0.63) 5.75 (1.30)
 Pairs 0.87 (0.47) 2.10 (0.58) 3.18 (0.99)
Delay
 Actions 1.77 (0.66) 3.25 (0.81) 4.56 (1.19)
 Pairs 0.51 (0.44) 1.31 (0.58) 2.25 (0.81)

Note. Performance is based on three-, five- and seven-step actions sequences performed at 18, 24, and 30 months, respectively.