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Parricides by mentally disordered offenders in Zimbabwe

Aim The aim of this study was to examine the similarities and differences between matricide and patricide committed by mentally disordered offenders in Zimbabwe. Methods A comprehensive, retrospective and national study was carried out of all individuals in Zimbabwe who, between 1980 and 1990 inclusive, were charged with homicide of their biological parents. The data were obtained from a hospital-wide survey, in a written semistructured format. Results The sample size was 39 offenders (34 men, 5 women) and there were 39 victims (20 matricides and 19 patricides). Sons committed 18 patricides and 16 matricides, and daughters committed one patricide and four matricides. The mean age of the offenders was 35 years with a standard deviation of 9.8, and the mean age of the victims was 60 years with a standard deviation of 9.3. Ethnicity of all the offenders and their victims was African. About one-third of the offenders were known to the psychiatric services and the rest were found to be mentally ill at the time of the crime when they were tried in the court of law. Most of the offenders were suffering from a psychotic illness and one offender had a diagnosis of personality disorder. Half of the offenders had been to a traditional healer some time before committing the crime. Most of the offenders used a blunt instrument, 15 used sharp instruments and one woman used strangulation. Firearms were not used in committing parricide. Conclusion The study showed that sons committed most parricides. However, daughters committed matricide more frequently than patricide. Male offenders were 10 years younger than female offenders. In all cases both the offender and victim were African, and lived in the same house in the rural areas of Zimbabwe. Psychosis among the offenders had substantially increased the risk of parricide.