Suicide Note Analysis and Authenticity

Edwin Shneidman, the founder of modern suicidology, began collecting and analysing suicide notes in the 1950s at the Los Angeles Suicide Prevention Center. He established a method of comparing genuine notes to simulated ones produced by matched controls, and used this to identify what he called the prototypical genuine note. His core finding was that genuine notes are personal, specific, and emotionally complex in ways that simulated notes are not. People who simulated notes tended toward generic statements about being unhappy; people who wrote genuine notes addressed specific relationships, specific grievances, and specific practical concerns.

Antoon Leenaars extended this work over several decades, developing a detailed linguistic and psychological coding system based on content analysis of hundreds of genuine notes. His categories include: unbearable psychological pain (explicit or implied), cognitive constriction (the binary thinking Shneidman described), indirect expressions of aggression, interpersonal communication specifically addressed to relationships, egression (the wish to escape a situation), and identification with another person, often someone else who had died.

The practical implication for forensic use is that the research gives analysts a structured framework for organising observations about a note, not a checklist that produces a definitive verdict. A note that matches all the typical features of genuine notes is more likely to be genuine. A note that lacks most of them and contains features inconsistent with genuine communication raises questions. Neither finding is conclusive without additional evidence.

Across the research literature, several linguistic features recur in genuine notes with enough consistency to be treated as reference points. None is individually diagnostic, but the presence or absence of a cluster of them is meaningful.

• Address to known individuals: genuine notes are typically addressed by name to specific people, often multiple named people in sequence. Impersonal openings ('to whom it may concern', 'to my family') are less common in genuine notes.
• Apology and responsibility: explicit or implicit apology for the act, for past behaviour, or for the pain being caused. This takes many forms, from direct 'I am sorry' to indirect expressions such as 'you deserved better than this'.
• Practical instructions: specific directions about possessions, debts, animals, children, or unfinished business. These suggest a mind attending to real-world consequences, consistent with the genuine psychological state.
• Leave-taking: farewell constructions addressed to specific people, sometimes recurring across the note as each relationship is addressed in turn.
• Emotional language consistent with extreme distress: linguistic markers of the state Shneidman described as psychache: unbearable psychological pain expressed through metaphor, hyperbole, or plain statement.
• Dichotomous framing: cognitive constriction expressed as binary choices, either-or constructions, and a collapsed sense of alternatives. 'There is no other way' and 'I cannot go on' are examples.

Fabricated notes, like fabricated ransom notes, reflect the fabricator's mental model of what the document should contain. That model is drawn from media, fiction, and cultural schema about suicide, none of which necessarily reflects what genuine notes actually contain. The result is a characteristic set of inconsistencies.

The style-inconsistency point is important but requires care. A note written at the moment of greatest psychological distress will not read exactly like a casual email. Vocabulary may be simpler, sentences shorter, punctuation less careful, because the cognitive state is different. The comparison is not expected to show identical style; it is expected to show features in the note that could plausibly come from the same person, in a different emotional state, rather than features that belong to a different speaker altogether.

In most jurisdictions, the medical examiner or coroner determines the cause and manner of death. Manner of death has five options: natural, accident, suicide, homicide, or undetermined. A note found at the scene is relevant evidence for the suicide determination, but it is not conclusive. A forensic linguist's analysis of the note can contribute to the coroner's determination in either direction, and that determination has cascading consequences.

• Life insurance: most policies contain a suicide exclusion clause, typically applying for the first one to two years of coverage. A suicide determination means the insurer does not pay the death benefit. A homicide or accident determination, or an undetermined verdict, may preserve the claim. Families therefore have a financial interest in the manner of death, and fabricated notes can be motivated by the opposite desire: the desire to make a homicide look like a suicide.
• Homicide investigation: a fabricated note in a homicide case is part of the cover-up. Its presence may cause police to close a case as suicide that should remain open. Its exposure as a fabrication reopens the homicide investigation and becomes evidence of the cover-up itself.
• Civil proceedings: the manner of death determination can affect wrongful-death suits, probate disputes, and custody arrangements for surviving children. Linguistic evidence about the note's authenticity has been submitted in all of these contexts.

Outside the common-law world, the legal architecture varies but the linguistic questions remain the same. In India, a note found at a suicide scene is relevant under the Indian Evidence Act as a dying declaration, a category treated as inherently credible given the circumstances of its writing. Fabrication challenges to a supposed dying declaration therefore have to navigate this evidentiary presumption. In many European jurisdictions, the forensic pathologist rather than a coroner makes the manner-of-death determination, with linguistic analysis submitted as a supporting expert report rather than as standalone evidence.

Authorship comparison for a deceased subject faces a practical constraint that does not apply to living-subject cases: no new writing can be requested or elicited. The analyst works with whatever authentic writing existed at the time of death and can be located. The sources differ in quality.

1. Personal correspondence
   Letters, emails, and text messages to family members and close friends are the most valuable comparison material because they are informal, personal, and emotionally inflected in ways that parallel the register of a genuine note. Handwritten letters also allow comparison of handwriting features alongside linguistic ones.
2. Social media and messaging
   For younger decedents especially, the richest corpus of authentic informal writing may be in private messages on platforms, sometimes recoverable from the device. Posts to public feeds are less useful because their register is performance-oriented rather than genuinely personal.
3. Diary and journal entries
   Where they exist, diaries are extremely valuable because they are genuinely unperformed writing. They may also contain writing from periods of emotional difficulty, making them the closest available parallel to the register of a genuine note.
4. Professional and formal documents
   Work emails, official letters, and applications are lower value because they reflect a constrained formal register. An analyst should use them but note that stylistic differences between these and the note may reflect register difference rather than authorship difference.

The comparison is for consistency, not identity. The analyst is asking whether the note could plausibly have been written by the person whose authentic samples are in the corpus, in the mental state suggested by the circumstances. Features that are present in the note but absent from every authentic sample, particularly at the sub-lexical level (characteristic misspellings the deceased never made, punctuation patterns inconsistent with any authentic sample), are more probative of fabrication than large-scale stylistic differences.

Suicide note analysis is the most ethically charged area of forensic linguistics. The analyst is working with the final communication of a person who died in distress, often while the family is in active grief, in a legal context where the stakes are high. Several obligations follow from this.

The analyst does not make the manner-of-death determination. That is the coroner or medical examiner's function. The analyst addresses the specific linguistic questions: are the features of this note consistent with genuine notes in the research literature, and are they consistent with what is known about this person's writing? Both questions are answerable at different confidence levels. Both need to be bounded correctly in the report.

The analyst also needs to be alert to confirmation bias. If the instructing party is convinced the death was a homicide, they may present the case in a way that primes the analyst to find fabrication. If the coroner has already made a suicide determination and the analyst is working for an insurance company, the pressure may run in the other direction. Both directions of bias have produced problems in documented cases. The standard protections are the same ones that apply across forensic linguistics: document the methodology, present the evidence that cuts against the preferred conclusion, have the analysis reviewed, and state the limits of the conclusions clearly.