1. Greater Sciatic Notch Variation
Lindsay Kiefer

2. 1.Forensic Anthropological Theory
The change of theory since the 1977.
American Board of Forensic Anthropology
Biological Profile
Major theoretical shift
Six key developments

4. 2.Experimental Design and Methodology
I. Primary Methodology
Pelvic
Cranial
Morphological Scoring
Femoral
Sacral
Skeletal Measurements
1-2: Female
3: Ambiguous
4-5: Male
Sexing

5. I. Hypothesis #1 Methodology
Each Innominate
Greater Sciatic Notch
Photos
Analyzing Digital Images Software
1 cm2 Scale
Area Calculation
Statistical Package for the Social Sciences
Data Documentation

6. I. Hypothesis #2 Methodology1 3
3 Rays
Angles 1, 2, and 3
Angle determination
Standard protractor
Data documentation
Angle measurement 2

8. t-test for Equality of Means
3. Experimental Testing and Results
I. Hypothesis #1
Sample Frequencies
Sex N
Area of left GSN cm2 Female
Male 18 30
Area of right GSN cm2 Female 16 28
Total Right
Left 48 44
Table 1
 t-test for Equality of Means
Sig. (2-tailed)
Area of left GSN cm2 E. V. Assumed
.894
E. V. Not Assumed
.890
Area of right GSN cm2 E. V. Assumed
.423
.443
E.V. Not Assumed
Table 2
Figure 1

9. t-test for Equality of Means
3. Experimental Testing and Results
I. Hypothesis #2
Cases
Included
Excluded
Total N
Left Angle 1 * Sex 52 48 46 13 17 19 65
Left Angle 2 * Sex
Left Angle 3 * Sex
Right Angle 1 * Sex
Right Angle 2 * Sex
Right Angle 3 * Sex
Table 1
 t-test for Equality of Means
 Sig. (2-tailed)
Left Angle 1
.000
Left Angle 2
.852
Left Angle 3
Right Angle 1
Right Angle 2
.010
Right Angle 3
Table 3
Figure 1

10. 3. Experimental Testing and Results
I. Hypothesis #2
Angle Sex Estimation
Males
≤40º
Females
≥40º
Kappa Statistic
Angle Sex Determination & UW Database
.697
Mean of Angle 1
Males
36º
Females
55º
Table 2
Table 1
Table 3

11. Experimental Methodology
Conclusion
Theory
Experimental Methodology
Testing Results