<qa>  What is the average therapeutic dose of Paroxetine?Arm 3: Treatment with Paroxetine on a fixed dose schedule will be initiated at 10 mg po qhs on day 1. On day 3 it will be increased to 20 mg po qhs. On day 7 it will be increased to 30 mg po qhs. Most patients respond to an average therapeutic dose of 30 mg of paroxetine.. This will ensure that a subgroup of subjects will receive optimum therapeutic dose of Paroxetine and also aid to titrate Paroxetine equivalent dose of Risperidone. 