A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
A stab in the dark: The distance threshold of target identification in low light
Tekijät: Thomas J. Nyman, Jan Antfolk, James Michael Lampinen, Maria Tuomisto, Johanna K. Kaakinen, Julia Korkman, Pekka Santtila
Kustantaja: TAYLOR & FRANCIS AS
Julkaisuvuosi: 2019
Journal: Cogent Psychology
Tietokannassa oleva lehden nimi: COGENT PSYCHOLOGY
Lehden akronyymi: COGENT PSYCHOL
Artikkelin numero: 1632047
Vuosikerta: 6
Numero: 1
Sivujen määrä: 23
ISSN: 2331-1908
DOI: https://doi.org/10.1080/23311908.2019.1632047
Verkko-osoite: https://www.tandfonline.com/doi/full/10.1080/23311908.2019.1632047
Rinnakkaistallenteen osoite: https://research.utu.fi/converis/portal/detail/Publication/41623940
Prior research shows that increased distance and decreased light result in less correct eyewitness identifications, yet their combined effect is not well understood. The aim of the present study was to establish the maximum distance in low lux (lx) where an eyewitness's later identification in target present (TP) line-ups is no longer reliable. We randomized participants (N = 178) into one of three lx conditions (high:300 lx, medium:10 lx, low:0.7 lx) and presented them with eight targets (one at a time) at eight separate distances (6-20 m). Each target-presentation was followed by an 8-person simultaneous TP line-up (i.e., there was a .125 probability of choosing the target correctly by chance). We found that the rate of correct TP identifications decreased with increased distance in all lx conditions. At 20 m the rate of correct TP identifications was .53 in the high lx condition, .41 in the medium lx condition and .11 in the low lx condition. The generalizability of our findings to overall eyewitness accuracy is limited by the exclusion of target absent line-ups, yet our findings show that reliable and correct target present identifications are very unlikely following observations made in low lighting (0.7 lx) at 20 m.
Ladattava julkaisu This is an electronic reprint of the original article. |  |
