Examining the effects of paper type, pen type, writing pressure and angle of intersection on white and dark dominance in ESDA impressions of sequenced strokes-an application of the likelihood ratio

NicDaeid, N. and Whitehead, L. and Allen, M. (2008) Examining the effects of paper type, pen type, writing pressure and angle of intersection on white and dark dominance in ESDA impressions of sequenced strokes-an application of the likelihood ratio. Forensic Science International, 181 (1-3). pp. 32-35. ISSN 0379-0738 (http://dx.doi.org/10.1016/j.forsciint.2008.08.006)

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Abstract

Questioned document casework can occasionally involve the sequencing of impressions. Although some conclusions can be drawn from looking at ESDA traces of intersections there is currently no way of assessing the strength of the observations made in any given case. Using a range of paper and pen types this work examines points of intersection and evaluates the results statistically in order judge the value of the results obtained.

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