Lindsay Clancy, standing trial for the murder of her three children in Plymouth, Massachusetts, is said to have lacked awareness of her actions due to mental health issues. A psychologist, Paul Zeizel, presented this testimony at her trial.
Zeizel’s testimony supports the defense’s argument that Clancy, diagnosed with bipolar disorder, was experiencing postpartum psychosis at the time of the incident. This condition, though rare, is associated with childbirth-related stress, sleep deprivation, and hormonal changes. Zeizel began treating Clancy after the deaths, noting she could not conform her behavior to the law and had no comprehension of her actions’ wrongfulness due to her mental state.
“She was unable to conform her behavior to the rule of law. She had no appreciation for the wrongfulness of her act,” Zeizel stated.
Clancy, 36, pleads not guilty to charges of murdering her children, aged 8 months to 5 years. Postpartum psychosis affects roughly 1 to 2 in 1,000 women post-childbirth and is substantially more severe than postpartum depression.
Prosecutors contend Clancy planned the murders, sending her husband away to collect medicine and dinner on the day of the killings. Zeizel shared that, in December 2022, Clancy sought help at a perinatal clinic, expressing feelings of being damaged and suicidal, experiencing paranoia, and fearing child loss.
Despite being in a psychotic state, Zeizel clarified she was still able to perform ordinary tasks. On the day of the murders, she took her daughter to the doctor, played in the snow with the children, and looked up a pharmacy and restaurant online.
During cross-examination, the prosecution questioned Zeizel’s objectivity and noted omissions in his report. They pointed out discrepancies regarding Clancy’s suicidal intent, noting the absence of reports stating she heard voices urging her to harm herself and questioned the gravity of her suicide attempt, which resulted in paralysis after jumping from a window.
Prosecution emphasized this by referencing Clancy’s lack of observance on her children’s significant dates, contrasting Zeizel’s defense that she often speaks of them, suggesting Clancy deeply misses and loves her children.
“She really loves them and misses them and thinks of them every single day, almost every moment of the day,” Zeizel affirmed.
If convicted, Clancy faces life imprisonment without parole. A verdict finding her not guilty due to mental health issues could lead to confinement in a state mental health facility.
Editor’s note: This article discusses suicide. If you or someone you know needs assistance, contact the U.S. national suicide and crisis lifeline by calling or texting 988.

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