笔迹动态特征研究

笔迹是通过书写运动形成的轨迹,由静态要素和动态要素所组成,承载着时间和空间信息。笔迹动态特征是客观存在的,它是书写人书写技能和书写习惯的外在表现,主要包括速度特征、笔力特征、脉冲特征、节奏特征等。对笔迹动态特征进行研究,多视域地挖掘和认识笔迹特征,可为笔迹检验鉴定意见提供更全面、更深层的支撑。     

老年笔迹的检验分析

老年笔迹特征相对特异,较正常笔迹书写特征有明显差异,而与临摹笔迹和病理笔迹特征在一定程度上存在相似性,容易导致鉴定结论错误。因此,鉴定人在分析检验老年笔迹时,应合理分析老年笔迹特征和其他类型笔迹特征的异同点。另外,鉴定人在检验中要充分分析检材特征,结合案情掌握大量高质量的比对样本,作出正确判断。     

笔迹鉴定中的“漏笔画现象”浅析

笔迹从其实质来看,是笔迹书写人书写技能和书写动作习惯的反映。笔迹鉴定结论正是笔迹鉴定人通过笔迹特征来认识书写人的书写技能和书写动作习惯,经过综合评断而作出的检材与样本是否同一的推断性意见。当检材或样本笔迹中出现漏笔画现象时,其是否可以反映书写人的书写动作习惯将直接影响笔迹鉴定人对笔迹书写人书写动作习惯的认识,进而影响鉴定结论的科学性。因此,正确地认识笔迹鉴定中的漏笔画现象,了解其产生的原因,将对笔迹鉴定具有重要的指导意义。     

文件检验技术在经济犯罪案件侦查中的应用

文件检验技术在侦破经济犯罪案件中有着重要的作用,利用文件检验技术对于及时有效地办理经济犯罪案件,提高办理经济犯罪案件的效率具有深远的现实意义。     

An insight into forensic document examiner expertise for discriminating between forged and disguised signatures

It has previously been shown that forensic document examiners (FDEs) have expertise in providing opinions about whether questioned signatures are genuine or simulated. This study extends the exploration of FDE expertise by evaluating the performance of eight FDEs and 12 control subjects at identifying signatures as either forgeries or the disguised writing of a specimen provider. Subject eye movements and response times were recorded with a Tobii 1750 eye tracker during the signature evaluations. Using a penalty scoring system, FDEs performed significantly better than control subjects (t = 2.465, p = 0.024), with one FDE able to correctly call 13 of the 16 test stimuli (and three inconclusive calls). An analysis of eye movement search patterns by the subjects indicated that a very similar search strategy was employed by both groups, suggesting that visual inspection of signatures is mediated by a bottom up search strategy. However, FDEs spent greater than 50% longer to make a decision than the control group. The findings are suggestive that for some stimuli FDEs can discriminate between forgeries and disguises, and that this ability is due to a careful inspection and consideration of multiple features within a signature.