In the original article, Figure 4 was replicated for Figures 5, 6 and 9. The authors and the publishers would like to apologise for this error. The correct Figures are shown below.
Total negative symptoms over 2-years of EI.

Expressivity over 2-years of EI.

Motivation over 2-years of EI.

Total negative symptoms over the 3-year RCT extension.

Expressivity over the 3-year RCT extension.

Motivation over the 3-year RCT extension.

Mean total negative symptoms over the 5-year critical period. b(r) = baseline at randomization.

Expressivity over the 5-year critical period. b(r) = baseline at randomization.

Motivation over the 5-year critical period. b(r) = baseline at randomization.









