Source: http://www.jfsmonline.com/printarticle.asp?issn=2349-5014;year=2018;volume=4;issue=4;spage=203;epage=212;aulast=Li
Timestamp: 2019-03-23 02:44:54
Document Index: 525816991

Matched Legal Cases: ['art 1', 'art 2', 'art 3', 'art 4', 'art 5', 'art 6', 'art 7', 'art 8', 'art 9']

Research on subjective bias cognition effect in handwriting identification :Bing Li, Tiantian Ma, Journal of Forensic Science and Medicine
Year : 2018 | Volume : 4 | Issue : 4 | Page : 203--212
Li B, Ma T. Research on subjective bias cognition effect in handwriting identification.J Forensic Sci Med 2018;4:203-212
Li B, Ma T. Research on subjective bias cognition effect in handwriting identification. J Forensic Sci Med [serial online] 2018 [cited 2019 Mar 22 ];4:203-212
Available from: http://www.jfsmonline.com/text.asp?2018/4/4/203/248700
Acceptance and hearing a caseIdentification and interpretationWriting a report of expert opinion.
After the credibility scores of each item were checked, the internal consistency reliability test was conducted. The results showed that the Cronbach's alpha coefficient of the internal consistency of the survey data was 0.776 [Table 1]. These data indicated that the questionnaire had high internal consistency and reliability.{Table 1}
As demonstrated by the results of the validity test depicted in [Table 2], the KMO value of the survey data was 0.797. As this met the requirement of more than 0.6, the KMO value test was passed. At the same time, the results of Bartlett's test showed that the approximate Chi-square value was 264.005, and the significance level was 0.000. The results of Bartlett's test also met the requirement with a significance level below 0.05. Therefore, it can be seen that the validity of the questionnaire data structure was good, and the questionnaire design met the statistical criteria.{Table 2}
Regarding the first questionnaire, the 149 valid responses were from 49 handwriting examiners, seven assistant examiners, 51 interns or students, and 39 others with no experience; these data are presented in [Chart 1].[INLINE:1]
In short, it can be concluded that handwriting examiners prefer to think that subjective bias, which is a part of the process, enables the formulation of accurate opinions. Essentially, they believe that it is necessary to understand the context when conducting an examination [Chart 2].[INLINE:2]
[Chart 3] depicts that the appearance rate of the examiners is not high; about 60% never go to court and 40% rarely appear in court.[INLINE:3]
The accuracy rates for the conclusions of the case for the professional examiners, assistant examiners, and interns or professional students were 93.88%, 71.43%, and 60.78%, respectively. The results are depicted in [Chart 4].[INLINE:4]
The accuracy rate of professional examiners' conclusions regarding Case 1 was almost 100%, which would indicate high handwriting identification skill, but the accuracy rate regarding Case 2 was very low. From [Chart 5], it can be concluded that the facts of the case have a certain influence on forensic examiners, but this effect also shows a regularity. In other words, it is inversely proportional to the experience of the examiners; the longer the work experience of the examiners, the lower the impact. The less the expert's work experience, the greater the impact. This conclusion should also confirm the conclusion of the previous paragraph.[INLINE:5]
When [Chart 6], [Chart 7], [Chart 8], [Chart 9] are considered based on the results, it can be clearly observed that forensic experts are irregular when faced with the characters of the same signature. With regard to the complexity and variety of handwriting characteristics, it is difficult to establish numerical standards. The characteristics of the ink lines of each Chinese character are not the same, and the differences in the writing habits of each individual bring great difficulty. This also somehow proves that handwriting identification is not suitable for establishing numerical standards.[INLINE:6][INLINE:7][INLINE:8][INLINE:9]
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