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. Author manuscript; available in PMC: 2015 Mar 1.
Published in final edited form as: Dev Psychol. 2015 Jan 19;51(3):392–405. doi: 10.1037/a0038749

Table 4.

Memory at test: Mean (standard deviation) proportions of yes responses (i.e., old responses) on different item types in Experiment 1 and 2.

Experiment Age Group Training Type High-Match new-D one-new-P all-new-P
Experiment 1 Adults Classification 0.94 (0.11) 0.07 (0.15) 0.23 (0.21) 0.01 (0.04)
Inference 0.54 (0.36) 0.32 (0.31) 0.16 (0.17) 0.01 (0.04)
6-year-olds Classification 0.88 (0.19) 0.24 (0.32) 0.49 (0.34) 0.22 (0.36)
Inference 0.89 (0.17) 0.35 (0.39) 0.31 (0.26) 0.11 (0.19)
4-year-olds Classification 0.86 (0.19) 0.28 (0.23) 0.31 (0.27) 0.12 (0.21)
Inference 0.88 (0.16) 0.31 (0.21) 0.25 (0.22) 0.11 (0.17)

Experiment 2 4-year-olds Classification 0.88 (0.14) 0.36 (0.35) 0.38 (0.41) 0.30 (0.37)

Note:

The overall memory accuracy is estimated by the difference in the proportion of yes responses to High-Match items and to all-new-P items.

Memory accuracy for the rule (i.e. the D feature) is estimated by the difference in the proportion of yes responses to High-Match items and to new-D items.

Memory accuracy for the overall appearance (i.e., P features) is estimated by the difference in the proportion of yes responses to High-Match items and to one-new-P items.

The scale ranges from 0 to 1, with 0 being chance performance.