An IERI – International Educational Research Institute Journal
TIMSS 2011 | TIMSS 2015 | TIMSS 2019 | ||||
---|---|---|---|---|---|---|
Mean (SE) | SD (SE) | Mean (SE) | SD (SE) | Mean (SE) | SD (SE) | |
DEIS | 9.89* (0.11) | 1.54* (0.05) | 10.15* (0.10) | 1.58 (0.07) | 10.23* (0.08) | 1.59 (0.04) |
Non-DEIS | 11.04 (0.07) | 1.70 (0.03) | 11.23 (0.06) | 1.65 (0.03) | 11.27 (0.06) | 1.58 (0.03) |