Handwriting Analysis in Forensic Science
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Handwriting analysis can be used in forensic science
to establish whether or not forgery has been
committed. Forgery is the illegal act of reproducing
someone’s signature without his or her permission.
Forgery is most commonly encountered when an
individual illegally signs another person’s name to a
check to steal money from that person’s checking
account. Experts in handwriting, who are also called
document examiners, often testify in court about the
author of a signature.
Handwriting comparison is the most frequently
requested type of document analysis. As people
mature, they develop personal habits that contribute to
unique characteristics in their handwriting. By
adulthood, a person’s handwriting is as exclusive to
them as their speech. Even when a person tries to
disguise his or her handwriting, some of that person’s
own characteristics can still be seen. When experts in
handwriting carefully compare two documents, they
can usually tell whether the documents were written by
the same person.
Compare It with the Standard:
When the handwriting in a document is in question, the
document examiner asks for a handwriting sample with which
to compare the questioned document. This sample is the
standard for comparison. A standard is usually obtained from
two sources: requested writing and collected writing. The
collected writing comes from writing done before the
investigation began. It may be signatures on canceled checks or
written applications for jobs. To provide a requested writing, an
individual writes a dictated text using the same type of paper
and ink that was used in the document in question.
Twelve Basic Characteristics of
Comparing Handwriting:
•
Line quality
•
Spacing of words & letters
•
Lifting pen
•
Connecting strokes
•
Strokes to begin & end
•
Unusual letter formation
•
Ratio of height, width & size
of letters
•
Pen pressure
•
Slant
•
Baseline habits
•
Fancy writing habits
•
Placement of diacritics
(crossing t’s and dotting i ‘s)
Handwriting analysis plays a crucial role in forensic science, especially in detecting forgery. Experts compare handwriting samples to determine authenticity, relying on distinct characteristics such as line quality, spacing, and pen pressure. Utilizing standards for comparison, they assess unique traits in individual handwriting to establish authorship in legal cases.
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Presentation Transcript
Handwriting Handwriting Analysis Analysis
Handwriting analysis can be used in forensic science to establish whether or not forgery has been committed. Forgery is the illegal act of reproducing someone s signature without his or her permission. Forgery is most commonly encountered when an individual illegally signs another person s name to a check to steal money from that person s checking account. Experts in handwriting, who are also called document examiners, often testify in court about the author of a signature.
Handwriting comparison is the most frequently requested type of document analysis. As people mature, they develop personal habits that contribute to unique characteristics in their handwriting. By adulthood, a person s handwriting is as exclusive to them as their speech. Even when a person tries to disguise his or her handwriting, some of that person s own characteristics can still be seen. When experts in handwriting carefully compare two documents, they can usually tell whether the documents were written by the same person.
Compare It with the Standard: When the handwriting in a document is in question, the document examiner asks for a handwriting sample with which to compare the questioned document. This sample is the standard for comparison. A standard is usually obtained from two sources: requested writing and collected writing. The collected writing comes from writing done before the investigation began. It may be signatures on canceled checks or written applications for jobs. To provide a requested writing, an individual writes a dictated text using the same type of paper and ink that was used in the document in question.
Twelve Basic Characteristics of Comparing Handwriting: Line quality Spacing of words & letters Lifting pen Connecting strokes Strokes to begin & end Unusual letter formation
Ratio of height, width & size of letters Pen pressure Slant Baseline habits Fancy writing habits Placement of diacritics (crossing t s and dotting i s)
