Mind over matter
Mental illness and sentencing outcomes among homicide cases in Singapore
Bibliographic Data
| ID | 21459016 |
|---|---|
| Authors | Philip Tanpoco (National University of Singapore, corresponding author), Stella Tan Wei Ling (National University of Singapore), Kevin Chien-Chang Wu (0000-0003-3685-1731, Institute of Mental Health), Kenneth Gerard Koh Wun Wu, Fong Wan Ru (National University of Singapore), Harvinder Kaur (0000-0003-1991-0584, National University of Singapore), Daren Ong Guanjie (National University of Singapore) |
| Year | 2025 |
| Volume | 99 |
| Pages | 102053 |
| Publication date | 2025-03-01 |
| Open Access | Yes |
| Type | ARTICLE |
| Venue | International Journal of Law and Psychiatry (JOURNAL) |
| Journal identifiers | ISSN: 0160-2527 • E-ISSN: 1873-6386 |
| Publisher | Elsevier BV (PUBLISHER) |
| DOI | 10.1016/j.ijlp.2024.102053 |
| PMID | 39657300 |
| OpenAlex | W4405178249 |
| Language | EN |
| References cited | 14 |
Singapore implemented legal amendments that led to a transition from a mandatory death penalty to a discretionary death penalty in some cases of murder. This has granted judges greater leeway in the sentencing of homicide offenders, with a decade having now passed since the 2012 amendment. A notable scarcity of research exists to understand the relationship between mental illnesses and criminal culpability, as well as how diminished responsibility impacts sentencing outcomes. A quantitative study of all court judgments in all homicide cases recorded on LawNet (Singapore's legal database) from 2006 to 2020 was conducted to examine the relationship between mental illness, psychiatric disputes, and court outcomes. The findings revealed that the introduction of discretionary death penalty reduced death sentences by half. The study also confirmed the presence of a mental illness is correlated to a greater sentence length, and could even act as an aggravating factor in court outcomes. This research also baselined the typologies of psychiatric disputes among homicide cases in Singapore. Further research on mitigating and aggravating factors in Singapore homicide cases and their impact on sentencing outcomes is recommended
Aggravating Factor · Criminology · Culpability · Diminished responsibility · Homicide · Medical emergency · Mental health · Mental illness · Poison control · Political science · Psychiatry · Suicide prevention · Criminal Justice and Corrections Analysis · Homicide, Infanticide, and Child Abuse · Human Factors and Ergonomics · Law · Medicine · Psychology · Psychopathy, Forensic Psychiatry, Sexual Offending
| Highly cited | No |
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