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Asian-Pacific Journal of Second and Foreign Language Education

Table 1 Descriptive effect size statistics

From: The effectiveness of L2 vocabulary instruction: a meta-analysis

K

N

Effect Size (d)

SE sm

Z-Value

95% CI

Q

I 2

16

1008

0.80

0.14

5.60

0.52 to 1.08

59.94

74.94

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