**Corrections to this work**:
Table 6 on page 312 has 0.35 for Study 1 Time 1, however the correlation is 0.36. This is a mistake, may have been due to rounding issues with SPSS versus R, I'm not sure.
This may have also affected the mini-meta.
Rerunning the mini-meta analyses, the corrected aggregated mini meta effects are:
Time 1 - 0.28 [0.19, 0.38] instead of the current 0.29 [0.19, 0.39]
Time 2 - 0.24 [0.12, 0.36] instead of the current 0.25 [0.13, 0.38]