| | |  Technology News | September 2009 
Key to Subliminal Messaging is to Keep it Negative, Study Shows
 Craig Brierley - Wellcome Trust
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September 28, 2009
 |  | Sublminal: Existing or operating below the threshold of consciousness; being or employing stimuli insufficiently intense to produce a discrete sensation but often being or designed to be intense enough to influence the mental processes or the behavior of the individual: a subliminal stimulus; subliminal advertising. |  | | |
Subliminal messaging is most effective when the message being conveyed is negative, according to new research funded by the Wellcome Trust.
Subliminal images – in other words, images shown so briefly that the viewer does not consciously 'see' them – have long been the subject of controversy, particularly in the area of advertising. Previous studies have already hinted that people can unconsciously pick up on subliminal information intended to provoke an emotional response, but limitations in the design of the studies have meant that the conclusions were ambiguous.
Today, the journal Emotion publishes a study by a UCL team led by Professor Nilli Lavie, which provides evidence that people are able to process emotional information from subliminal images and demonstrates conclusively that even under such conditions, information of negative value is better detected than information of positive value.
In the study, Professor Lavie and colleagues showed fifty participants a series of words on a computer screen. Each word appeared on-screen for only a fraction of second – at times only a fiftieth of a second, much too fast for the participants to consciously read the word. The words were either positive (e.g. cheerful, flower and peace), negative (e.g. agony, despair and murder) or neutral (e.g. box, ear or kettle). After each word, participants were asked to choose whether the word was neutral or 'emotional' (i.e. positive or negative), and how confident they were of their decision.
The researchers found that the participants answered most accurately when responding to negative words – even when they believed they were merely guessing the answer.
"There has been much speculation about whether people can process emotional information unconsciously, for example pictures, faces and words," says Professor Lavie. "We have shown that people can perceive the emotional value of subliminal messages and have demonstrated conclusively that people are much more attuned to negative words.
"Clearly, there are evolutionary advantages to responding rapidly to emotional information. We can't wait for our consciousness to kick in if we see someone running towards us with a knife or if we drive under rainy or foggy weather conditions and see a sign warning 'danger'."
Professor Lavie believes the research may have implications for the use of subliminal marketing to convey messages, both for advertising and public service announcements such as safety campaigns.
"Negative words may have more of a rapid impact," she explains. "'Kill your speed' should be more noticeable than 'Slow down'. More controversially, highlighting a competitor's negative qualities may work on a subliminal level much more effectively than shouting about your own selling points."
Subliminal advertising is not permitted on TV in the UK, according the broadcasting regulator Ofcom*. However, there have been a number of cases where the rules been stretched. In one particularly infamous case in 1997, comedian Chris Morris used a half-frame caption at the end of the satirical show Brass Eye to criticise the chief executive of Channel 4, Michael Grade, for heavily editing the controversial programme. The description of his boss – "Grade is a ****" – would certainly have fallen into the category of negative words as described in Professor Lavie's research.
c.brierley(at)wellcome.ac.uk
*Ofcom states: "Broadcasters must not use techniques which exploit the possibility of conveying a message to viewers or listeners, or of otherwise influencing their minds without their being aware, or fully aware, of what has occurred." View PDF HERE.
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