Table 2.
Meta-Analytically Derived Effect Sizes for RT Reduction due to Retesting.
| Comparison | m | k | o | N | SMCR | SE | 95% CI | p | τ |
|---|---|---|---|---|---|---|---|---|---|
| 1.2 | 36 | 49 | 128 | 21,810 | −0.237 | 0.040 | [−0.318, −0.155] | <0.001 | 0.238 |
| 1.3 | 14 | 25 | 58 | 859 | −0.367 | 0.075 | [−0.519, −0.215] | <0.001 | 0.399 |
| 1.4 | 9 | 14 | 26 | 481 | −0.499 | 0.082 | [−0.666, −0.333] | <0.001 | 0.424 |
| 2.3 | −0.131 | 0.054 | [−0.241, −0.021] | 0.021 | |||||
| 3.4 | −0.132 | 0.026 | [−0.186, −0.079] | <0.001 | |||||
| 1.2 vs. 2.3 | −0.106 | 0.059 | [−0.226, 0.014] | 0.041 | |||||
| 2.3 vs. 3.4 | 0.002 | 0.055 | [−0.111, 0.114] | 0.979 |
Note. m = number of studies, k = number of samples, o = number of outcomes, N = total sample size, SMCR = standardized mean change with raw score standardization, SE = standard error, CI = confidence interval, τ = estimated overall SD of the true effect.