International Journal of Applied Biology and Forensics

Section Articles Forensic Sciences

Handedness and Gender Determination by Handwriting Examination

Peter Kiran and Almeida Myfanwy Alonza

Department of Forensic Science, Jain University, Bengaluru, India

Correspondence: peterkiran.a@gmail.com

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Abstract

The purpose of this study is to find out if there are any differences between sinistral and dextral individuals as well as differences in gender based on their handwriting characteristics which will help in identifying the author in case of anonymous letters or any other document whose author is unknown. This study was conducted on 25 left-handed males, 25 left-handed females, 25 right-handed males and 25 right-handed females. A control passage was dictated to the subjects and they had to write it twice, in their own handwriting, on the two blank sheets provided. The characteristics of the handwriting were analyzed. According to the findings of this study, the horizontal strokes of the numbers “1”, “5”, “7”; the letters “A”, “E”, “F”, “H”, “I”, “J”, “T”, “f”, “t” and the Hyphen (-) executed from the right to the left direction and the circular strokes of the numbers “9”, “0” and the letters “O”, “Q” and “o” executed in the clockwise direction indicate that the character has most likely been executed by a left-handed individual while the horizontal strokes executed from the left to the right direction and the circular strokes executed in the anti-clockwise direction indicate that the character has most likely been executed by a right-handed individual.

Keywords: Questioned Document, Handwriting, Handedness, Gender, Forensics

Public Perception on Forensic Science and Its Importance

Pradeep Loyed Martis and Don Caeiro

Department of Forensic Science, Jain University, Bengaluru, India

Correspondence: pradeeployedmartis@gmail.com

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Abstract

A study was conducted in order to evaluate awareness about forensic science among general public. For this study 50 Individuals were interviewed and their opinions were recording against different parameters to define their knowledge about the field of forensics. According to the study conducted, majority of the public are not aware of the use of forensic science and its importance in crime investigation. The maximum number of respondents i.e. 52% said that they have come to know about forensic science through movies and serials. The most of the respondents i.e. 50% feel that forensic science is mainly used in police department. Maximum number of respondents i.e. 52% feels that public needs awareness to improve the field of forensic science. Thus we can conclude that there is a lack of awareness among public regarding this field. Because of that lack of knowledge, the field of forensic science is not given much importance and value in the field of crime investigation and the public unintentionally disturb or distort the scene of crime and further disturb vital evidences that may be present.

Keywords: Forensics, Public Perception, Crime Scene, Judicial, Evidence, Fingerprints

Development of Latent Blood Stain Using Luminol from Four Different Surfaces after Subjecting to Different Agents over Periods of Time

Domala Sai Krishna and Sujayaraj Samuel

Department of Forensic Science, Jain University, Bangalore, India.

Correspondence: saik22295@gmail.com

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Abstract

The study is based on analysis of the latent blood stains left over a period of time (15 days), subjected to regents like normal water, hot water, detergent, bleach, ethanol and developed using luminol solution on surfaces like cloth, paper, wooden plank, tile (porous and non-porous). The objective of the study is to understand whether the latent blood stains can be developed after cleaning agents are used to wash the bloodstains on different surfaces (porous and non-porous) and to understand if they can be developed after fifteen days, post subjecting to cleaning agents. Luminol is a chemi-luminescent chemical. The luminol solution is prepared using standard procedure and is used to develop the latent blood stains, the analysis is done based on color, intensity, visibility of the reaction of luminol with latent blood stain. The reaction is positive, concluding that the latent blood stain can be developed over a period of time using luminol after treating the subjected surfaces with reagents mentioned.

Keywords: Chemi-luminescent, Luminol, Blood Spatter, Ethanol, Forensics, Crime Scene Investigation