Factors associated with weapon use in maternal filicide

Area of Science:

• Forensic Psychiatry
• Criminology
• Psychopathology

Background:

• Filicide, the act of killing one's own child, is a rare but serious offense.
• Understanding the methods used in filicide, particularly weapon involvement, is crucial for forensic and psychiatric evaluations.
• Previous research has explored motives and demographics but specific factors influencing weapon use require further investigation.

Purpose of the Study:

• To identify factors associated with the use of weapons (knives or guns) in filicidal women.
• To compare weapon use in filicide with national child homicide statistics.
• To examine the relationship between maternal psychosis, child's age, and weapon use in filicide.

Main Methods:

• Retrospective chart review of 60 filicidal women from forensic and psychiatric security board records (1970-1996).
• Statistical analyses including chi-square tests, ANCOVAS, and logistic regression to determine factors associated with weapon use.
• Comparison of study findings with national data from the Department of Justice Uniform Crime Reports (UCR).

Main Results:

• Weapons (knives or guns) were used by 25% of the filicidal women in the study.
• Psychotic mothers were over eleven times more likely to use a weapon compared to non-psychotic mothers (OR=11.2, p=.008).
• Psychosis was present in all cases of knife use and in most cases of gun use. Younger children were less likely to be killed with weapons, independent of maternal psychosis.

Conclusions:

• Maternal psychosis is a significant predictor of weapon use in filicide.
• The age of the child is also a factor, with older children being more likely to be targets of weapon-based filicide.
• These findings highlight the importance of considering maternal mental state and victim age in understanding weapon involvement in child homicide cases.