For the final blog post, I will be writing about a talk
video that I came across a while ago. Jamie Oliver, a well-know chef, gave a
talk about the dangers of current school food and children’s knowledge
regarding nutrition during a TED Award event. Jamie went on showing the
cumulative amounts of sugar in a child’s carton of milk provided by one school
cafeteria. He started with the amount that a child would consume in a day – 8
teaspoons in a carton of flavoured sweetened milk provided twice a day. Then,
he went on showing the amount of sugar in a week, and later on, in 5 years. The
initial did not seem to matter as much, however as it adds up, it is well
shocking as to how much sugar these children have consumed over a longer term. Just
on milk.
The persuasive technique that he used could be regarded as
an interaction between contrast and negativity effects. Bohner, Ruder, and Erb
(2002) found that this contrast effect is significant provided the presenter
has an expertise in the field. In addition, Barton, Castillo & Petrie
(2012) suggested that negativity effect is a very effective technique in
persuasion, where it has been used in political campaigns against opposition
candidates. Also as reported by Reinhert and Feeley (2007), using statistics
rather than a simple narrative was also more persuasive in delivering talks – a
common technique used in speech, also applied here.
As Jamie pointed out in his talk, cases of diabetes and other
lifestyle diseases at the moment are one of the highest. Yet these are preventable
problems certainly in this age of technological advancement.
Bohner, G., Ruder, M., & Erb, H. P. (2002). When
expertise backfires: Contrast and assimilation effects in persuasion. British
Journal of Social Psychology, 41(4), 495-519.
Barton, J., Castillo, M., & Petrie, R. (2012). Going
Negative: The Persuasive Effect of Tone and Information on Campaign Fundraising
and Voter Turnout (No. 1037).
Reinhart, A. M. (2006). Comparing the persuasive effects of
narrative versus statistical messages: A meta-analytic review. (Order No.
3213634, State University of New York at Buffalo). ProQuest Dissertations and
Theses, , 103-103 p.
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