Thirty-nine chronic schizophrenic male out-patients and their relatives were interviewed separately to assess their perceptions of their current relationships. Two simple 5-point rating scales predicted the risk of psychotic exacerbation during a one-year follow-up: patients' perceptions of the relatives' attitudes towards them, and patients' own attitudes towards the relatives. Survival analysis of data in a 2 x 2 factorial--combining degree of contact with the key relatives and the patients' perceptions of their relatives--found that patients in frequent contact with a positively perceived relative had significantly better survival rates without psychotic exacerbation. Patients' perceptions of their relatives may help identify patients at risk of exacerbation of their illness.