Skip to main content
main-content

18.10.2017 | Original Article | Ausgabe 3/2018

International Journal of Legal Medicine 3/2018

An eye tracking study of bloodstain pattern analysts during pattern classification

Zeitschrift:
International Journal of Legal Medicine > Ausgabe 3/2018
Autoren:
R. M. Arthur, J. Hoogenboom, R. D. Green, M. C. Taylor, K. G. de Bruin
Wichtige Hinweise

Electronic supplementary material

The online version of this article (https://​doi.​org/​10.​1007/​s00414-017-1711-6) contains supplementary material, which is available to authorized users.

Abstract

Bloodstain pattern analysis (BPA) is the forensic discipline concerned with the classification and interpretation of bloodstains and bloodstain patterns at the crime scene. At present, it is unclear exactly which stain or pattern properties and their associated values are most relevant to analysts when classifying a bloodstain pattern. Eye tracking technology has been widely used to investigate human perception and cognition. Its application to forensics, however, is limited. This is the first study to use eye tracking as a tool for gaining access to the mindset of the bloodstain pattern expert. An eye tracking method was used to follow the gaze of 24 bloodstain pattern analysts during an assigned task of classifying a laboratory-generated test bloodstain pattern. With the aid of an automated image-processing methodology, the properties of selected features of the pattern were quantified leading to the delineation of areas of interest (AOIs). Eye tracking data were collected for each AOI and combined with verbal statements made by analysts after the classification task to determine the critical range of values for relevant diagnostic features. Eye-tracking data indicated that there were four main regions of the pattern that analysts were most interested in. Within each region, individual elements or groups of elements that exhibited features associated with directionality, size, colour and shape appeared to capture the most interest of analysts during the classification task. The study showed that the eye movements of trained bloodstain pattern experts and their verbal descriptions of a pattern were well correlated.

Bitte loggen Sie sich ein, um Zugang zu diesem Inhalt zu erhalten

★ PREMIUM-INHALT
e.Med Interdisziplinär

Mit e.Med Interdisziplinär erhalten Sie Zugang zu allen CME-Fortbildungen und Fachzeitschriften auf SpringerMedizin.de. Zusätzlich können Sie eine Zeitschrift Ihrer Wahl in gedruckter Form beziehen – ohne Aufpreis.

Zusatzmaterial
ESM 1 (DOCX 272 kb)
414_2017_1711_MOESM1_ESM.docx
ESM 2 (DOCX 63.8 kb)
414_2017_1711_MOESM2_ESM.docx
ESM 3 (DOCX 73.5 kb)
414_2017_1711_MOESM3_ESM.docx
ESM 4 (DOCX 8.29 mb)
414_2017_1711_MOESM4_ESM.docx
Literatur
Über diesen Artikel

Weitere Artikel der Ausgabe 3/2018

International Journal of Legal Medicine 3/2018Zur Ausgabe

Neu im Fachgebiet Rechtsmedizin

27.06.2018 | Originalien | Ausgabe 4/2018

Ärztliche Konsultationen bei Verdachtsfällen von Kindeswohlgefährdung

Systematische Untersuchung in zwei Jugendamtsbezirken von Sachsen-Anhalt

26.06.2018 | Prostatakarzinom | CME | Ausgabe 4/2018

CME: Neuroendokrines Prostatakarzinom

19.06.2018 | Schwerpunkt: Pathologie und Forschungsbiobanken | Ausgabe 4/2018

Der Aufbau und Betrieb einer Zentralen Biomaterialbank

Die ZeBanC der Charité Berlin