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6. How many participants were added to the study who had been hospitalised once previously for schizophrenia to make the sample more generalisable?
7. How were premorbid functioning symptoms gathered through?
- Laboratory Experiment
- Semi-structured Interview
- Questionnaire
- Meta-analysis
8. How was information on the symptoms gathered?
- Interview
- Questionnaire
- Meta-analysis
- Laboratory Experiment
9. What was the mean age of these participants?
10. How many participants were originally used in Goldstein (1988)
11. How many participants who were diagnosed as schizophrenic by DSM-II in the 1970s retained their diagnosis from the DSM-III in the 1980s?