We all know that lack of sleep affects our memory, along
with other cognitive abilities.
Sitting in the office, sleep deprived, it’s difficult to
remember your own name, let along the ever-lengthening to-do list.
But now new research shows that not getting enough sleep
increases the chances your mind will actually create false memories.
Here is
then one of the recent psychology experiment on our memory:
The study, published in Psychological Science, allowed one
group of participants to get a full nights’ sleep, while another had to stay up
all night (Frenda et al., 2014).
In the morning they were given a series of photos that were
supposed to show a crime being committed.
Next, both groups were given some eyewitness statements
about the crime.
Like many witness statements in real-life crimes, the
details were different to those shown in the photographs.
Afterwards, they were asked what they had seen in the
original photographs.
The results showed that those who’d missed out on their
sleep were the most likely to regurgitate the false eyewitness statements
they’d just read, rather than remembering the ‘true’ crime-scene photos they’d
been shown moments beforehand.
The lack of sleep had messed with their heads to the extent
that all the evidence — right and wrong — had got mixed up.
One of the study’s authors, Kimberly Fenn, said:
“People who repeatedly get low amounts of sleep every night
could be more prone in the long run to develop these forms of memory
distortion.
It’s not just a full night of sleep deprivation that puts
them at risk.”
Indeed, a preliminary study they carried out found that
getting just five hours sleep was enough to cause people to start manufacturing
false memories.
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