Handwriting analysis ASISTM Project Forensic Investigations.
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Transcript of Handwriting analysis ASISTM Project Forensic Investigations.
Handwriting analysis
ASISTM ProjectForensic Investigations
Characteristics
Handwriting experts look at 12 characteristics of a person’s writing.
They try and compare a sample of the suspect’s writing to a known original.
On first glance the forgery is quite a good copy.
Original
Forgery
Lets take a closer look!
Line quality
Are the lines smooth or shaky?
Original
Forgery
Spacing - words and letters
Is the spacing size consistent?
Ratio - height, width, size
Original
Forgery
Are the letters consistent in shape & size?
Pen lifts and separation
Are the pen lifts consistent?
Original
Forgery
Connecting strokes
Compare how letters are linked.
Original
Forgery
Beginning and ending strokes
Are the strokes straight, curled, long?
Original
Forgery
Unusual letter formation
Unusual letters - letters written backwards, tails
Original Forgery
Shading or pen pressure
Differences in shading = differences in pen pressure
Original
Forgery
Slant
Is the slant or angle of the letters consistent?
Original
Forgery
Baseline habits
Does the writing go below the line?
There is a tendency for the top author (original) to write above the line while the forgery tends to be on the line.
Original
Forgery
Flourishes and embellishments
Any fancy letters?
Original
Forgery
Diacritic placement - cross i, dot t
Is the line on the “t” in proportion? Are the “i’s” dotted left or right?
Original
Forgery
The i dot and t cross tend to the right of the letter.
The i dot is varied. The t cross is even. The form of the lettert is wider at the base.
References
Deslich, B & Funkhouser, J. 2005 Forensic Science for High School. Kendall/Hunt Publishing Company, US
Writing samples from J Dook & T. Hutchison, scanned into Adobe Photoshopat 400dpi.
Graphic design for slides by T. Hutchison, DUIT Multimedia, UWA