When the Question Is Not Only Who Wrote It – But What the Writing May Reveal
The terms Forensic Document Examination and Forensic Graphology are sometimes used interchangeably.
They should not be.
Both examine handwriting, but they ask fundamentally different questions.
A Forensic Document Examiner may be asked:
Who wrote this document?
Is this signature genuine or forged?
Were these two documents written by the same person?
Has the document been altered?
Forensic Graphology asks something different:
What can the writing behaviour tell us about the writer in relation to the matter being investigated?
The distinction is important.
One examines primarily the identity and authenticity of the writing.
The other examines the behaviour of the writer through the writing.
Three Different Questions
Perhaps the simplest way to understand the distinction is to consider three questions that can be asked about exactly the same handwritten document.
1. Who wrote it?
This is the traditional forensic handwriting-identification question.
A questioned document is compared with known specimens. The examiner studies individual writing habits, movement, construction, proportions, spacing, rhythm, line quality and numerous other characteristics in order to determine whether the writings are consistent with common authorship.
The personality of the writer may be completely irrelevant.
2. What kind of person wrote it?
This moves into graphology.
Here the handwriting is examined for behavioural and personality patterns: emotional responsiveness, control, adaptability, interpersonal approach, persistence, inhibition, organisation, internal conflicts and other characteristics.
The question is no longer primarily one of authorship.
It concerns the person behind the writing.
3. What happened to the writer while writing it?
This is where Forensic Graphology becomes particularly interesting.
Suppose a handwritten statement progresses normally until the writer reaches one particular subject.
Suddenly the writing changes.
Pressure increases.
Movement becomes disturbed.
Fluency deteriorates.
A word is hesitated over, corrected, overwritten or erased.
Spacing changes.
The rhythm that had remained relatively stable throughout the document becomes irregular.
The professional question is not:
“What does an erasure mean?”
It is:
“Why did the writing behaviour change here?”
That question may have forensic significance.
Handwriting Is Behaviour
Handwriting is a learned motor activity controlled by the brain and nervous system.
Once writing has become habitual, much of its physical execution occurs automatically.
The writer consciously thinks primarily about the message:
What am I going to say?
The brain simultaneously manages thousands of smaller motor adjustments required to produce that message.
This distinction becomes particularly relevant under psychological stress.
A person may consciously control the words being written while the physical behaviour involved in producing those words becomes more difficult to control with the same consistency.
This does not mean that every hesitation reveals deception.
It does mean that changes in automatic writing behaviour can become relevant observations when they occur in psychologically significant places.
Forensic Graphology Is Not TMT
The same principle that applies to personality graphology applies even more strongly in forensic work:
Graphology is not TMT – “This Means That.”
A tremor does not mean:
“The writer is lying.”
Strong pressure does not mean:
“The writer is guilty.”
An erasure does not mean:
“The writer is hiding something.”
An unusually detailed explanation does not automatically mean deception.
Every one of these characteristics can have innocent explanations.
But suppose several of them appear together.
Suppose the handwriting has been relatively fluent and stable for most of a statement, yet becomes disturbed precisely when the writer reaches the central subject of an investigation.
Now the individual signs are no longer being considered in isolation.
We are observing a change of pattern.
And the question becomes:
What caused that change?
The Writer Becomes His Own Comparison
There is an especially interesting feature of this type of examination.
In ordinary forensic handwriting identification, questioned writing is compared with other (known) handwriting specimens.
In behavioural forensic examination, sometimes the most useful comparison is found within the same document.
The writer becomes, in a sense, his own control.
How does this person write while discussing relatively neutral matters?
What happens when the narrative approaches a sensitive subject?
Does the established rhythm remain?
Does pressure change?
Does fluency deteriorate?
Does the writer begin correcting or restructuring words?
And after passing the sensitive area, does the writing return towards its earlier pattern?
This can sometimes be more informative than asking whether a particular sign is generally associated with a particular psychological condition.
We are asking something more specific:
What changed within this writer's own behaviour?
Content and Execution
A handwritten document contains two different sources of information.
The first is obvious:
what the writer says.
The second is less obvious:
how the writer physically produces what is being said.
Consider ordinary conversation.
A person says:
“That doesn't bother me at all.”
But while saying it, the voice changes, the person hesitates, avoids eye contact and becomes physically tense.
None of these behaviours proves that the statement is false.
But would we completely ignore them?
Probably not.
They provide additional behavioural information.
Handwriting can sometimes be approached in a similar way.
The written words provide the verbal message.
The handwriting provides a visible record of the motor behaviour accompanying that message.
Forensic Graphology examines the relationship between the two.
Forensic Graphology as an Investigative Tool
This distinction is particularly important when Forensic Graphology is used in an investigation.
The examination may provide a strong indication that a particular subject has produced an unusual psychological response.
The combination of characteristics may even lead the examiner to a firm opinion concerning deception or involvement.
But identifying behaviour consistent with deception is different from proving the underlying act.
If a person appears to react abnormally while writing about a missing object, that reaction does not, by itself, prove that the person stole it.
The distinction is similar to other investigative methods that may direct attention towards a particular individual without independently establishing the offence.
Forensic Graphology can therefore assist an investigation by helping to determine:
Where should we look more carefully?
Which part of this statement deserves further attention?
Is there an unusual behavioural response associated with a particular subject?
Are the words and the writing behaviour telling compatible stories?
These findings may become supportive when considered together with other evidence.
They should not be confused with direct proof of the act itself.
The Content May Also Matter
There is another important difference between ordinary forensic handwriting examination and Forensic Graphology.
In handwriting identification, the examiner can often work without understanding the linguistic content of the writing. The examination concerns graphic habits rather than the meaning of the text.
In Forensic Graphology, however, where a change occurs may be just as important as the change itself.
If the writing deteriorates around a particular word, sentence, person, event or subject, the relationship between the graphic change and the content may become significant.
We are therefore examining not merely the handwriting and not merely the words.
We are examining the interaction between content and behaviour.
It Is Not Mind Reading
Forensic Graphology should never be presented as an ability to read somebody's thoughts.
It cannot tell us exactly what a person was thinking at a particular moment.
Nor can it automatically explain why a behavioural change occurred.
A writer may become anxious because of guilt.
Another may become anxious because of fear of being falsely accused.
A particular subject may trigger embarrassment, anger, painful memories or concern about somebody else.
Therefore, recognising psychological disturbance is only the beginning.
The examiner must still ask:
What alternative explanations are possible?
That question is not a weakness.
It is part of professional reasoning.
Where Forensic Experience Matters
Identifying a change in handwriting is relatively easy.
Understanding its significance is considerably more difficult.
Was the change caused by normal variation?
Did the writing position change?
Did the pen malfunction?
Was the writer becoming physically tired?
Is the apparent tremor present elsewhere in the document?
Is the increased pressure habitual?
Is the correction merely an ordinary spelling correction?
Or does a cluster of unusual characteristics appear specifically around one psychologically significant part of the statement?
The professional task is to distinguish the ordinary from the significant.
That requires more than knowing a collection of graphological signs.
It requires understanding handwriting movement, natural variation, line quality, motor behaviour, psychology and the circumstances in which the document was produced.
Two Disciplines – One Piece of Paper
The same handwritten page can therefore be examined at several different levels.
The Forensic Document Examiner may examine it to determine:
Who wrote it?
The Graphologist may examine it to explore:
What behavioural characteristics does the writer display?
The Forensic Graphologist may ask:
What is happening to the writer's behaviour in relation to the matter under investigation?
The handwriting has not changed.
The professional question has.
And the question determines what evidence we look for.
Beyond the Obvious
The obvious information in a handwritten statement is contained in the words.
The writer tells us what happened.
The writer explains.
Denies.
Confirms.
Describes.
But while those words are being consciously selected, another process is taking place.
The hand is moving.
Pressure is changing.
Rhythm is developing.
Habitual movements are being repeated.
And occasionally, something interrupts the established pattern.
That interruption does not automatically give us the answer.
But it may tell us where the question begins.
Forensic Graphology therefore does not replace investigation.
It can become part of investigation.
It looks beyond what has been written and examines the behaviour involved in writing it.
The words tell us the story the writer has chosen to communicate.
The handwriting may tell us where that story deserves a closer look.