Table 1.
Mean cognitive scores as measured at the three assessments
| Measure | First episode score | One-year follow-up score | Four-year follow-up score |
|---|---|---|---|
| Premorbid IQ | 100.31 (10.92) | ||
| Current IQ | 94.04 (14.86) | 96.24 (15.16) | 92.35 (24.35) |
| Recognition memory | 20.80 (2.80) | 20.71 (3.19) | 19.87 (3.28) |
| Working memory manipulation | 29.25 (19.99) | 27.07 (5.82) | 30.83 (18.56) |
| Working memory span | 5.38 (1.14) | 5.82 (1.37) | 5.87 (1.38) |
| Planning | 7.47 (2.07) | 8.24 (2.13) | 8.24 (1.95) |
| Thinking time | 5677 (3221) | 5946 (3273) | 8216 (5970) |
| Set shifting | 10.78 (10.06) | 12.53 (11.09) | 9.08 (9.40) |
| Rule learning | 11.18 (9.59) | 15.48 (25.17) | 7.02 (4.34) |
Standard deviations are shown in parentheses.