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Vastrick TW, Schuetzner E, Osborn K. Measuring the Frequency Occurrence of Handwritten Numeral Characteristics. J Forensic Sci. 2017;63(4):1215-1220doi: 10.1111/1556-4029.13678.
Vastrick, T. W., Schuetzner, E., & Osborn, K. (2018). Measuring the Frequency Occurrence of Handwritten Numeral Characteristics. Journal of forensic sciences, 63(4), 1215-1220. https://doi.org/10.1111/1556-4029.13678
Vastrick, Thomas W, et al. "Measuring the Frequency Occurrence of Handwritten Numeral Characteristics." Journal of forensic sciences vol. 63,4 (2018): 1215-1220. doi: https://doi.org/10.1111/1556-4029.13678
Vastrick TW, Schuetzner E, Osborn K. Measuring the Frequency Occurrence of Handwritten Numeral Characteristics. J Forensic Sci. 2018 Jul;63(4):1215-1220. doi: 10.1111/1556-4029.13678. Epub 2017 Nov 03. PMID: 29098694.
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J Forensic Sci. 2018 Jul;63(4):1215-1220. doi: 10.1111/1556-4029.13678. Epub 2017 Nov 03.

Measuring the Frequency Occurrence of Handwritten Numeral Characteristics.

Journal of forensic sciences

Thomas W Vastrick, Ellen Schuetzner, Kelsey Osborn

Affiliations

  1. 522 S Hunt Club Blvd., Apopka, FL, 32702.
  2. 6348 N. Milwaukee Avenue, Chicago, IL, 60646.
  3. University of Central Oklahoma Forensic Science Institute, 100 North University Drive, Edmond, OK, 73034.

PMID: 29098694 DOI: 10.1111/1556-4029.13678

Abstract

The premise of this follow-up sister study to "Measuring the Frequency Occurrence of Handwriting and Handprinting Characteristics" was to collect a representative population sampling of numerals and assess how many participants utilize each of the predetermined characteristics as found in their specimens. A total of 1410 handwriting specimen forms were collected from across the United States and pared to 1025 to obtain a proper representative sample of the U.S. adult population based on the same demographics used in the original 2017 study. This study provides frequency of occurrence proportions and 95% confidence limits for 25 handwritten numeral characteristics. A total of 277 intercharacter pairs of handwritten numeral characteristics were cross-analyzed for interdependence. The results were that 72.92% of all intercharacter pairs had a coefficient of correlation between -0.2 and +0.2 in this study.

© 2017 American Academy of Forensic Sciences.

Keywords: attribute agreement analysis; forensic science; frequency occurrence; handwriting; numerals; proportions; questioned documents

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