Handwriting Examination: Moving from Art to Science

Jarman, K H; Hanlen, R C; Manzolillo, P A

doi:10.2172/5703

Title: Handwriting Examination: Moving from Art to Science

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Abstract

In this document, we present a method for validating the premises and methodology of forensic handwriting examination. This method is intuitively appealing because it relies on quantitative measurements currently used qualitatively by FDE's in making comparisons, and it is scientifically rigorous because it exploits the power of multivariate statistical analysis. This approach uses measures of both central tendency and variation to construct a profile for a given individual. (Central tendency and variation are important for characterizing an individual's writing and both are currently used by FDE's in comparative analyses). Once constructed, different profiles are then compared for individuality using cluster analysis; they are grouped so that profiles within a group cannot be differentiated from one another based on the measured characteristics, whereas profiles between groups can. The cluster analysis procedure used here exploits the power of multivariate hypothesis testing. The result is not only a profile grouping but also an indication of statistical significance of the groups generated.

Authors:: Jarman, K H; Hanlen, R C; Manzolillo, P A

Publication Date:: 1999-04-12

Research Org.:: Pacific Northwest National Lab. (PNNL), Richland, WA (United States)

Sponsoring Org.:: US Department of Energy (US)

OSTI Identifier:: 5703

Report Number(s):: PNNL-12180
R&D Project: 28218; TRN: AH200115%%101

DOE Contract Number:: AC06-76RL01830

Resource Type:: Technical Report

Resource Relation:: Other Information: PBD: 12 Apr 1999

Country of Publication:: United States

Language:: English

Subject:: 99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE; CRIME DETECTION; DOCUMENT TYPES; MEASURING METHODS; VALIDATION; MULTIVARIATE ANALYSIS

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                    Jarman, K H, Hanlen, R C, and Manzolillo, P A. Handwriting Examination: Moving from Art to Science.  United States: N. p., 1999. 
        Web.  doi:10.2172/5703.

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                    Jarman, K H, Hanlen, R C, & Manzolillo, P A. Handwriting Examination: Moving from Art to Science.  United States.  https://doi.org/10.2172/5703

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                    Jarman, K H, Hanlen, R C, and Manzolillo, P A. 1999.  
        "Handwriting Examination: Moving from Art to Science".  United States.  https://doi.org/10.2172/5703.  https://www.osti.gov/servlets/purl/5703.

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@article{osti_5703,

  title        = {Handwriting Examination: Moving from Art to Science},

  author       = {Jarman, K H and Hanlen, R C and Manzolillo, P A},

  abstractNote = {In this document, we present a method for validating the premises and methodology of forensic handwriting examination. This method is intuitively appealing because it relies on quantitative measurements currently used qualitatively by FDE's in making comparisons, and it is scientifically rigorous because it exploits the power of multivariate statistical analysis. This approach uses measures of both central tendency and variation to construct a profile for a given individual. (Central tendency and variation are important for characterizing an individual's writing and both are currently used by FDE's in comparative analyses). Once constructed, different profiles are then compared for individuality using cluster analysis; they are grouped so that profiles within a group cannot be differentiated from one another based on the measured characteristics, whereas profiles between groups can. The cluster analysis procedure used here exploits the power of multivariate hypothesis testing. The result is not only a profile grouping but also an indication of statistical significance of the groups generated.},

  doi          = {10.2172/5703},

  url          = {https://www.osti.gov/biblio/5703},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {1999},

  month        = {4}

}

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