From: The effectiveness of L2 vocabulary instruction: a meta-analysis
Study Name | Cohen’s d | Standard error | Variance | Lower limit | Upper limit |
---|---|---|---|---|---|
Rukholm 2011 | 0.38 | 0.283 | 0.80 | 0.174 | 0.934 |
Radwen &Boyer 2011 | 0.53 | 0.294 | 0.086 | − 0046 | 1.106 |
Fehr et al. 2012 | 0.72 | 0.315 | 0.099 | 0.103 | 1.337 |
Beaten et al. 2005 | 1.08 | 0.391 | 0.153 | 0.314 | 1.846 |
Mori 2011 | 0.36 | 0.415 | 0.172 | 0.454 | 1.174 |
Esit 2011 | 1.04 | 0.365 | 0.134 | 0.324 | 1.756 |
Cetin & Flamand 2012 | 1.37 | 0.399 | 0.159 | 0.587 | 2.153 |
Florence et al. 2006 | 1.26 | 0.220 | 0.048 | 0.830 | 1.690 |
Ferguson 2009 | 0.80 | 0.278 | 0.077 | 0.256 | 1.344 |
Meli 2009 | 0.04 | 0.227 | 0.051 | 0.404 | 0.484 |
Metaxca 2013 | 0.53 | 0.179 | 0.032 | 0.180 | 0.880 |
Tongpoon 2009 | 1.57 | 0.204 | 0.042 | 1.69 | 1.971 |
Dyni 2006 | 0.52 | 0.415 | 0.172 | 0.294 | 1.334 |
Yang 2011 | 0.15 | 0.278 | 0.077 | 0.395 | 0.695 |
Dilans 2010 | 0.67 | 0.435 | 0.189 | 0.183 | 1.523 |
Ko 2012 | 1.80 | 0.261 | 0.68 | 1.289 | 2.311 |
Random-Effect | 0.80 | 0.144 | 0.021 | 0.524 | 1.088 |