Humans detect snakes more accurately and quickly than other animals under natural visual scenes: a flicker paradigm study

Threat detection is crucial to survival. Studies using unnatural visual scene settings (i.e. visual search tasks) have shown that humans and primates are able to identify snakes more quickly than they are able to identify other animals. The present study employed a flicker paradigm task to assess wh...

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Published in:Cognition and emotion 2020-05, Vol.34 (3), p.614-620
Main Authors: Kawai, Nobuyuki, Qiu, Huachen
Format: Article
Language:English
Subjects:
Adolescent
Adult
Animals
Biological Evolution
Female
Humans
Male
Paradigms
Photic Stimulation - methods
Primates
Reaction Time
Reptiles
Snakes
Visual Perception
Visual system
Young Adult
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description Threat detection is crucial to survival. Studies using unnatural visual scene settings (i.e. visual search tasks) have shown that humans and primates are able to identify snakes more quickly than they are able to identify other animals. The present study employed a flicker paradigm task to assess whether humans detect snakes more accurately and rapidly than they do other reptiles in natural scene settings. Participants watched a long series of images, consisting of pairs of complex natural scenes. A blank interval was inserted between the two versions of the scene, showing only the scene and the scene plus an added animal (snake or lizard). Participants detected scene changes featuring the snake targets more accurately and rapidly than those with lizard targets. This finding supports the view that there were evolutionary pressures for a visual system which prioritised human detection of snakes.
doi_str_mv 10.1080/02699931.2019.1657799
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subjects Adolescent
Adult
Animals
Biological Evolution
Female
Humans
Male
Paradigms
Photic Stimulation - methods
Primates
Reaction Time
Reptiles
Snakes
Visual Perception
Visual system
Young Adult
title Humans detect snakes more accurately and quickly than other animals under natural visual scenes: a flicker paradigm study
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