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Arabic-Illiterate Forensic Handwriting Analysis: A Pilot Study to Further Investigate the Ability of Arabic-Illiterate Examiners to Judge theAccuracy of Simulations of ArabicSignatures, Compared with Arabic-Literate Examiners Cover

Arabic-Illiterate Forensic Handwriting Analysis: A Pilot Study to Further Investigate the Ability of Arabic-Illiterate Examiners to Judge theAccuracy of Simulations of ArabicSignatures, Compared with Arabic-Literate Examiners

Open Access
|Jun 2014

Figures & Tables

Figure 1

The two model signatures with horizontal baselines indicated by the red lines and the alignments of the baselines of the signatures indicated by the green lines.

Figure 2

Forward slant of some letters (red lines) and backward slant of others (green arrows), relative to the baselines of the writing (yellow lines).

Figure 3

The two model signatures with especially large letters circled in red, medium-sized letters circled in blue, and especially small letters circled in green.

Figure 4

Spacing between words: longer spaces between words in Signature 2 and negative spaces between words in Signature 1.

Figure 5

Spacing between letters: The boundaries between letters are indicated by circles. Within words, letters are widely spaced in Signature 1, but usually overlap in Signature 2. Different colors help to distinguish circles.

Figure 6

The Survey Instrument.

Table 1

p values for the differences in ranks assigned to the two sets of FDEs for each of the six elements.

ElementLine QualityFormSizeSpacingArrangementSlantTotal quality of freehand simulation
Mann-Whitney U4933.0004709.5004785.5004720.5004890.0004487.5004765.500
Wilcoxon W9983.0009759.5009835.5009770.5009940.0009537.5009815.500
Z-.174-.755-.572-.733-.280-1.296-.575
Asymptotic Significance (2-tailed).862.450.568.463.779.195.565
Table 2

Mann-Whitney U mean ranks and sums of ranks for FHE-element categories.

FHENMean Rank
Line QualityArabic FHE
Non-Arabic
FHE Total
100
100
200
101.17
99.83
FormArabic FHE
Non-Arabic
FHE Total
100
100
200
103.41
97.60
sizeArabic FHE
Non-Arabic
FHE Total
100
100
200
102.65
98.36
SpacingArabic FHE
Non-Arabic
FHE Total
100
100
200
103.30
97.71
ArrangementArabic FHE
Non-Arabic
FHE Total
100
100
200
101.60
99.40
SlantArabic FHE
Non-Arabic
FHE Total
100
100
200
105.63
95.38
Total quality of freehand simulationArabic FHE
Non-Arabic
FHE Total
100
100
200
102.85
98.16
DOI: https://doi.org/10.69525/jasqde.202 | Journal eISSN: 1524-7287
Language: English
Page range: 3 - 9
Published on: Jun 1, 2014
Published by: American Society of Questioned Document Examiners
In partnership with: Paradigm Publishing Services

© 2014 Abdulaziz Al-Musa Alkahtani, published by American Society of Questioned Document Examiners
This work is licensed under the Creative Commons Attribution 4.0 License.