Comparison of Aripiprazole and Risperidone for the Treatment of People With First-Episode Psychosis

The dosage for aripiprazole will be 5 mg to 30 mg per day in capsule form. The dose of aripiprazole will be based on the participant's clinical improvement and side effects, which will be evaluated weekly for the first 4 weeks and then every 2 weeks until the 12th week and then monthly until study end.

The dosage for risperidone will be 1 mg to 6 mg per day in capsule form. The dose of risperidone will be based on the participant's clinical improvement and side effects, which will be evaluated weekly for the first 4 weeks, then every 2 weeks until the 12th week, and then monthly until the study end.