Debunking The Sixth Sense

Without invoking a sixth sense, people can reliably sense when a change had occurred even when they could not see exactly what had changed.

Asian Scientist (Jan. 21, 2014) – People can reliably sense when a change had occurred even when they could not see exactly what had changed, according to a new study by researchers in Australia.

However, the researchers concluded that this is not due to extrasensory perception (ESP) or having a sixth sense. Rather they do this by picking up cues from more conventional senses such as sight.

Lead researcher Dr Piers Howe said the research is the first to show in a scientific study that people can reliably sense changes that they cannot visually identify.

In the study, published in PLOS ONE, observers were presented with pairs of color photographs, both of the same female. In some cases, her appearance would be different in the two photographs. For example, the individual might have a different hairstyle.

Each photograph was presented for 1.5 seconds with a 1 second break between them. After the last photograph, the observer was asked whether a change had occurred and, if so, identify the change from a list of nine possible changes.

Results showed study participants could generally detect when a change had occurred even when they could not identify exactly what had changed.

For example, they might notice that the two photographs had different amounts of red or green but not be able to use this information to determine that the person had changed the color of their hat. This resulted in the observer “feeling” or “sensing” that a change had occurred without being able to visually identify the change.

According to the researchers, this is evidence that people can receive information through their senses that they are unable to describe verbally. However, people often attribute this “feeling” or “sensing” to an extrasensory ability.

“There is a common belief that observers can experience changes directly with their mind, without needing to rely on the traditional physical senses such as vision, hearing, taste, smell and touch to identify it. This alleged ability is sometimes referred to as a sixth sense or ESP,” said Dr Howe.

“We were able to show that while observers could reliably sense changes that they could not visually identify, this ability was not due to extrasensory perception or a sixth sense.”

The article can be found at: Howe PDL and Webb ME (2014) Detecting Unidentified Changes.

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Source: University of Melbourne; Photo: luisar/Flickr/CC.
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