Too little sleep tricks memory: People who are deprived of shuteye are more likely to make things up they have ‘seen’


  • Lack of sleep makes people more likely to form false memories, study finds
  • Students shown photos of crime taking place then false information about images 
  • Sleep deprived participants were more likely to report made-up details
  • Research team say findings could have important legal applications 

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A lack of sleep makes people more likely to form false memories, according to a study.

Researchers showed 104 students photos of a crime taking place and then gave them false information about the images.

Half had slept and half had stayed awake all night.

A lack of sleep makes people more likely to form false memories, according to a study

The sleep-deprived participants were more likely to report the made-up details as things they had ‘seen’ in the photos, than those who got a full night’s sleep.

The researchers said that their results, published in the journal Psychological Science, have important legal applications.

Previous studies have shown that failing to get the full eight hours interferes with cognitive functioning, but psychological scientist Steven Frenda noticed a gap in research when it came to sleep and memory.

The scientist, from the University of California, said: ’Over the years I noticed that whenever I had a bad night’s sleep, my perception and memory seemed to get fuzzy until I had a good recovery sleep.

‘I was surprised to find that there were so few empirical studies connecting sleep deprivation with memory distortion in an eyewitness context. 

‘The studies that do exist look mostly at sleep deprived people’s ability to accurately remember lists of words – not real people, places and events.’

‘Recent studies are suggesting people are getting fewer hours of sleep … and chronic sleep deprivation is on the rise.

‘Our findings have implications for the reliability of eyewitnesses who may have experienced long periods of restricted or deprived sleep.

He said more research is necessary before scientists can provide law enforcement with evidence-based guidelines on how to best ensure that eyewitnesses’ memories are accurate, adding: ‘We are running new experiments now, in order to better understand the influence of sleep deprivation on processes related to false memory.’

 

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