Handwriting changes under the effect of alcohol

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• Handwriting changes under the effect of alcohol

Forensic Science International 132 (2003) 201210
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Demographic of volunteers
Characteristic n Percentage
Gender Gender Gender
Male 65 87.7
Female 8 12.3
Marital status Marital status Marital status
Married 55 74
Single 17 24.7
Divorced 1 1.3
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Characteristic n Percentage
Handednes Handednes Handednes
Right 66 90.4
Left 7 9.6
Occupation Occupation Occupation
Engineer 18 24.65
Employee 31 42.46
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Characteristic n Percentage
Occupation Occupation Occupation
Technician 5 6.84
Manager 2 2.73
Officer 17 23.28
Education Education Education
High school and below 40 54.8
University and above 33 45.2
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• ????? Olympus X-Tr Sterreo
• ??????? Video spectral comparator (VSC 2000)
• Digital caliper,???????????

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Olympus X-Tr sterreo
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Video spectral comparator (VSC 2000)
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Afyondan Denizli yonune dog?ru 20 km kadar
uzaklasmistik ki kendimizi demiryolunu
atlayip turunc bahceleri arasina dalan yolda
bulduk. I?ki yanimizi susleyen erken bahar
mujdecileri papatyalar ve gelincikler, bizi
Eskihisar koyune dek cekip goturdu.
Boylece ilk cay molamizi koy kahvesinde
vermis olduk.
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1.???????????? (Afyondan, demiryolunu,
bahceleri, mujdecileri, molamizi) 2.
??????????????????????????? (measured A of
Afyon, D of Denizli, B of Boylece) 3.
???????????????????????????(measured o of
dog?ru, r of kadar, e of kendimizi, first
a of bahar, v of ve) 4.
???????????????????????????????(d of dog?ru,
t of turunc, k of bulduk) 5.
?????????????????????????????(y of yonune,
first p of papatya, g of gelincik) 6.
???????????????????? Denizli and yonune,
atlayip and turunc, mujdecileri and
papatyalar, bizi and Eskihisar, molamizi
and koy)
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??????????????????????? Digital caliper
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Pearson Chi square test
ANOVA
Pearson correlation
McNemar test
Wilcoxon signed rank test
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Changes in handwritting to both alcohol
consumption and educational level
High school and below High school and below High school and below High school and below High school and below
Word length Mean S.D. Minimum Maximum
Word length 27.31 4.70 15.60 37.87
S 27.31 4.70 15.60 37.87
WA 31.36 6.89 19.40 51.00
Height of upper case 5.25 0.97 3.55 7.24
S 5.25 0.97 3.55 7.24
WA 5.86 1.34 3.70 8.85
S sober, WA with alcohol
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Changes in handwritting to both alcohol
consumption and educational level
High school and below High school and below High school and below High school and below High school and below
Height of lower case Mean S.D. Minimum Maximum
Height of lower case 2.31 0.43 1.20 3.21
S 2.31 0.43 1.20 3.21
WA 2.69 0.67 1.83 4.58
Height of ascending letter 4.99 0.84 3.54 7.29
S 4.99 0.84 3.54 7.29
WA 5.46 1.27 3.59 9.60
S sober, WA with alcohol
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Changes in handwritting to both alcohol
consumption and educational level
High school and below High school and below High school and below High school and below High school and below
Height of descending letter Mean S.D. Minimum Maximum
Height of descending letter 5.48 1.18 3.51 7.66
S 5.48 1.18 3.51 7.66
WA 5.80 1.45 3.75 9.63
Spacing between words 4.60 1.28 1.14 7.67
S 4.60 1.28 1.14 7.67
WA 5.21 1.28 2.54 8.02
S sober, WA with alcohol
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Changes in handwritting to both alcohol
consumption and educational level
High school and below High school and below High school and below High school and below High school and below
Number of angularity Mean S.D. Minimum Maximum
Number of angularity 2.05 2.11 0.00 10.00
S 2.05 2.11 0.00 10.00
WA 2.53 2.39 0.00 10.00
Number of tremor 2.48 2.21 0.00 10.00
S 2.48 2.21 0.00 10.00
WA 4.33 4.82 0.00 21.00
S sober, WA with alcohol
32
Changes in handwritting to both alcohol
consumption and educational level
High school and below High school and below High school and below High school and below High school and below
Number of tapered end Mean S.D. Minimum Maximum
S 32.05 19.73 1.00 90.00
WA 46.13 25.87 6.00 110.00
S sober, WA with alcohol
33
Changes in handwritting to both alcohol
consumption and educational level
University degree and above University degree and above University degree and above University degree and above University degree and above
Word length Mean S.D. Minimum Maximum
Word length 27.79 4.51 15.80 38.41
S 27.79 4.51 15.80 38.41
WA 30.92 6.87 6.87 20.30 45.34
Height of upper case 5.45 1.25 3.22 9.29
S 5.45 1.25 3.22 9.29
WA 5.65 1.13 3.60 7.83
S sober, WA with alcohol
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Changes in handwritting to both alcohol
consumption and educational level
University degree and above University degree and above University degree and above University degree and above University degree and above
Height of lower case Mean S.D. Minimum Maximum
Height of lower case 2.33 0.46 1.20 3.27
S 2.33 0.46 1.20 3.27
WA 2.32 0.46 1.69 3.16
Height of ascending letter 4.92 1.02 3.19 7.51
S 4.92 1.02 3.19 7.51
WA 5.11 1.20 3.28 7.89
S sober, WA with alcohol
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Changes in handwritting to both alcohol
consumption and educational level
University degree and above University degree and above University degree and above University degree and above University degree and above
Height of descending letter Mean S.D. Minimum Maximum
Height of descending letter 5.52 1.33 3.22 8.51
S 5.52 1.33 3.22 8.51
WA 5.91 1.44 3.69 9.44
Spacing between words 4.77 1.77 2.30 9.17
S 4.77 1.77 2.30 9.17
WA 5.61 1.69 2.09 9.54
S sober, WA with alcohol
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Changes in handwritting to both alcohol
consumption and educational level
University degree and above University degree and above University degree and above University degree and above University degree and above
Number of angularity Mean S.D. Minimum Maximum
Number of angularity 1.15 1.62 0.00 6.00
S 1.15 1.62 0.00 6.00
WA 1.82 2.08 0.00 10.00
Number of tremor 1.94 1.77 0.00 6.00
S 1.94 1.77 0.00 6.00
WA 2.85 2.67 0.00 10.00
S sober, WA with alcohol
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Changes in handwritting to both alcohol
consumption and educational level
University degree and above University degree and above University degree and above University degree and above University degree and above
Number of tapered end Mean S.D. Minimum Maximum
S 39.52 26.75 9.00 107.00
WA 47.61 23.49 5.00 117.00
S sober, WA with alcohol
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Changes in handwritting to both alcohol
consumption and educational level
Word length Alcohol FP Education F P
S 40.53 0.0005 0.65 0.421
WA 40.53 0.0005 0.65 0.421
Height of upper case 15.99 0.0005 3.99 0.050
S 15.99 0.0005 3.99 0.050
WA 15.99 0.0005 3.99 0.050
Height of lower case 10.43 0.002 11.44 0.001
S 10.43 0.002 11.44 0.001
WA 10.43 0.002 11.44 0.001
F test value, P significance of test.
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Changes in handwritting to both alcohol
consumption and educational level
Height of ascending letter Alcohol FP Education F P
S 11.71 0.001 1. 94 0.168
WA 11.71 0.001 1. 94 0.168
Height of descending letter 13.87 0.0005 0.13 0.720
S 13.87 0.0005 0.13 0.720
WA 13.87 0.0005 0.13 0.720
Spacing between words 36.11 0.0005 0.97 0.328
S 36.11 0.0005 0.97 0.328
WA 36.11 0.0005 0.97 0.328
F test value, P significance of test.
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Changes in handwritting to both alcohol
consumption and educational level
Number of angularity Alcohol FP Education F P
S 7.63 0.007 0.21 0.644
WA 7.63 0.007 0.21 0.644
Number of tremor 9.83 0.002 1.14 0.289
S 9.83 0.002 1.14 0.289
WA 9.83 0.002 1.14 0.289
Number of tapered ends 25.45 0.0005 1.85 0.178
S 25.45 0.0005 1.85 0.178
WA 25.45 0.0005 1.85 0.178
F test value, P significance of test.
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Range of changing handwriting parameters under
the influence of alcohol
Variables Unchanged () Decreased () Increased ()
Word length 1.07 20.36 78.57
Height of upper case 1.37 27.4 71.23
Height of lower case 1.37 31.51 67.12
Height of ascending letter 1.37 32.88 65.75
Height of descending letter 0.00 28.77 71.23
Spacing between words 0.00 24.70 75.30
Number of tremor 17.81 20.55 61.64
Number of angularity 32.88 21.92 45.2
Number of tapered ends 1.37 23.29 75.34
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Correlation between handwriting parameters and
alcohol level
r
P
Word length 0.079 0.509
Height of upper case 0.305 0.009
Height of lower case 0.236 0.044
Height of ascending letter 0.069 0.563
Height of descending letter 0.121 0.306
Spacing between words 0.212 0.072
Number of angularity 0.416 0.0005
Number of tremor 0.032 0.788
Number of tapered ends 0.251 0.032
r test value, P significance of test.
43
Correlation between handwriting parameters
r
P
Word lengthheight of upper case 0.38 0.001
Word lengthheight of lower case 0.35 0.002
Word lengthheight of ascending letter 0.51 0.0005
Word lengthheight of descending letter 0.41 0.0005
Number of tremornumber of angularity 0.59 0.0005
Number of tremornumber of tapered ends -0.23 0.000
Number of tapered endsnumber of angularity -0.30 0.009
r test value, P significance of test.
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Significance of variation-excess in spacing
between lines, words, characters
With alcohol
P
Sober
Variation in spacing Variation in spacing Variation in spacing Variation in spacing
Between lines 39.7 65.7 0.001
Between words 31.9 50.0 0.011
Between characters 26.6 58.9 0.0005
P significance of test.
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Impairment at other handwriting parameters
With alcohol
Parameters
Sober
P
?????? ????????? 0.2 38.4 0.008
??????????????????????? 31.0 69.9 0.001
?????????? 33.0 42.5 0.230
????????????????? (???????????) 8.0 23.0 0.013
???????????????????????????????? 23.3 30.0 0.267
?????????????????????????? 22.0 29.0 0.424
??????????????????????? 25.0 29.0 0.508
??????????????????????? 4.0 16.0 0.004
P significance of test.
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Impairment at other handwriting parameters
With alcohol
Parameters
Sober
P
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??????????? 23.0 34.2 0.169
?????????? 26.0 50.7 0.001
?????????? 7.0 15.0 0.180
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????????????????? 30.0 46.6 0.012
????????????????? 5.0 14.0 0.031
?????????????????? 4.0 17.0 0.012
P significance of test.
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Impairment at other handwriting parameters
With alcohol
Parameters
Sober
P
????????????? ????????????? ????????????? ?????????????
?????????????????? 1.0 14.0 0.004
????????????? 3.0 25.0 0.001
????????????? 3.0 22.0 0.001
???????? 5.0 18.0 0.004
P significance of test.
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