The study will be conducted at the University of Illinois at Chicago and New York Presbyterian Hospital-Westchester Division. Patients with schizophrenia or schizoaffective disorder who are considered by their clinicians to not be clinically stable, or to be stable but still symptomatic, will be referred to the study. After obtaining informed consent, patients will be randomized either to the Risperdal Consta or control conditions. Patients in the control condition will remain on their oral antipsychotic medication for the duration of the study (note - patients currently taking oral risperidone will not be eligible for the study). Patients randomized to the Consta condition will take oral risperidone for 3 days, and if there are no adverse effects, they will begin receiving injections of Consta every 2 weeks over the next 6 months. During the first month, they will remain on oral risperidone, which will be tapered by the end of the month along with other antipsychotic medications other than Consta. At baseline, and every 4 weeks for 6 months, all patients will complete a computerized cognitive testing battery (CogTest), and be interviewed about social functioning and symptomatology. During months 4-6 of study participation, all patients will participate in a social skills group, the UCLA Basic Conversation Skills Module. Before and after this group, patients will be interviewed and participate in role-play based assessments regarding skills to be taught in the group. Patients will also receive physical exams, including and ECG, at baseline, and be monitored for side effects and adverse events every 2 weeks. The hypothesis driving this study is that patients in the Consta group will demonstrate greater improvement in verbal learning, skill acquisition in the training group, and improved social functioning, over the course of the 6 months. This hypothesis is based on prior data demonstrating that oral risperidone improves verbal memory, which is a mediator of skill acquisition in structured skills training groups. If this hypothesis is supported, it would be an important demonstration that a novel medication preparation (injectable Risperdal Consta) can, when combined with psychiatric rehabilitation, improve functional outcomes for patients participating in rehabilitation.