Neuroscience
Slithery, scaly, and downright terrifying is how many people view snakes. Even in Britain, which has only one species of poisonous snake, people are often afraid. Some experts have suggested the snake's public relations problem is based on the fact humans have a hard-wired fear of snakes and other threatening creatures like spiders. Now this argument has found fresh support from a series of experiments showing that, like adults, pre-school age children have a superior ability for detecting snakes compared with innocuous creatures.
Dozens of children aged between three and five years were presented with 3 x 3 grids on a computer screen. Their task was to touch the one square containing a snake as fast as possible while ignoring the squares which all contained either flowers, caterpillars or frogs, depending on the particular experiment. For a comparison condition, the children had to touch the one square containing either flowers, a caterpillar or frog (again, it depended on the experiment), while ignoring all the other squares which contained snakes.
Throughout, the children were significantly faster when the task was to spot a snake from among distractors than when the task was to spot flowers, frogs or caterpillars. Crucially, in many cases the children's parents said their offspring had never experienced snakes and were unaware of the dangerous reputation they have -yet the kids still showed this selective advantage for spotting snakes.
The researchers Vanessa LoBue and Judy DeLoache said their findings were consistent with the idea that humans have a fear module in the brain which is selectively sensitive to evolutionarily relevant threat stimuli. "The evolutionary claim," they said "is that [in the past] individuals who more rapidly detected the stimulus attributes signifying the presence of a poisonous snake or spider would have been more likely to escape the danger and hence to survive and reproduce."
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LoBue, V., DeLoache, J.S. (2008). Detecting the Snake in the Grass: Attention to Fear-Relevant Stimuli by Adults and Young Children. Psychological Science, 19(3), 284-289. DOI: 10.1111/j.1467-9280.2008.02081.x
Post written by Christian Jarrett (@psych_writer) for the BPS Research Digest.
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Neuroscience
More evidence that fear of snakes is hard-wired
Slithery, scaly, and downright terrifying is how many people view snakes. Even in Britain, which has only one species of poisonous snake, people are often afraid. Some experts have suggested the snake's public relations problem is based on the fact humans have a hard-wired fear of snakes and other threatening creatures like spiders. Now this argument has found fresh support from a series of experiments showing that, like adults, pre-school age children have a superior ability for detecting snakes compared with innocuous creatures.Dozens of children aged between three and five years were presented with 3 x 3 grids on a computer screen. Their task was to touch the one square containing a snake as fast as possible while ignoring the squares which all contained either flowers, caterpillars or frogs, depending on the particular experiment. For a comparison condition, the children had to touch the one square containing either flowers, a caterpillar or frog (again, it depended on the experiment), while ignoring all the other squares which contained snakes.
Throughout, the children were significantly faster when the task was to spot a snake from among distractors than when the task was to spot flowers, frogs or caterpillars. Crucially, in many cases the children's parents said their offspring had never experienced snakes and were unaware of the dangerous reputation they have -yet the kids still showed this selective advantage for spotting snakes.
The researchers Vanessa LoBue and Judy DeLoache said their findings were consistent with the idea that humans have a fear module in the brain which is selectively sensitive to evolutionarily relevant threat stimuli. "The evolutionary claim," they said "is that [in the past] individuals who more rapidly detected the stimulus attributes signifying the presence of a poisonous snake or spider would have been more likely to escape the danger and hence to survive and reproduce."
_________________________________
LoBue, V., DeLoache, J.S. (2008). Detecting the Snake in the Grass: Attention to Fear-Relevant Stimuli by Adults and Young Children. Psychological Science, 19(3), 284-289. DOI: 10.1111/j.1467-9280.2008.02081.x
Post written by Christian Jarrett (@psych_writer) for the BPS Research Digest.
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By guest blogger Mathias Clasen It’s the time of year, at least in our part of the world, when darkness encroaches on us—literally and metaphorically. The symbols and agents of darkness dominate Halloween decorations everywhere, and Halloween is growing...
- Live Animals Versus Fancy Toys - Which Do Toddlers Prefer?
Ignoring WC Fields' advice to "never work with children or animals", a team of researchers in the USA has done both at once in a research paper that compares children's interest in live animals against their interest in toys. Older children have...
- Snakes In A Brain Scanner!
Forget snakes on a plane, this was snakes in a brain scanner! To chart the neural activity associated with overcoming fear, Uri Nili and colleagues scanned snake-phobic participants' brains while they chose, with the press of a button, whether or...
- Learned Fear Of People Who Are Different
Some people are predisposed to fearing those whose skin colour is different from their own, in much the same way they are predisposed to fearing snakes and spiders. Andreas Olsson and colleagues presented participants with two photos, one of a black male...
- Snakes On The Brain
Great editorial by UC Davis anthropologist Lynne Isbell in yesterday's New York Times about snakes and the evolution of vision in primates. Isbell argues that "[n]ew anthropological evidence suggests that snakes, as predators, may have figured prominently...