Worm (marketing)
Encyclopedia
The "worm" is a market research
Market research
Market research is any organized effort to gather information about markets or customers. It is a very important component of business strategy...

 analysis tool developed by Roy Morgan Research
Roy Morgan Research
Roy Morgan Research is an Australian market research company headquartered in Melbourne, Victoria; it was founded in 1941 by Roy Morgan ; its Executive Chairman today is his son, Gary Morgan....

 (who called it The Reactor), with the purpose of gauging an audience's reaction to some visual stimuli over some time period. The name "worm" describes its visual appearance - as a line graph snaking up or down.

Each member of the audience firstly fills out a questionnaire, used to describe the composition of the audience. Then, each member is given a control device (such as a dial or keypad) with which they select their feelings towards the vision or stimuli (for example, whether they regard the comments currently being made by a speaker favourably or unfavourably). This dial is checked centrally three times per second, and as the audience reacts differently over time, the collective feelings of the audience are gathered.

The "worm" has been used in televised
Television
Television is a telecommunication medium for transmitting and receiving moving images that can be monochrome or colored, with accompanying sound...

 debate
Debate
Debate or debating is a method of interactive and representational argument. Debate is a broader form of argument than logical argument, which only examines consistency from axiom, and factual argument, which only examines what is or isn't the case or rhetoric which is a technique of persuasion...

s for Australian federal elections, including those between then Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

n prime minister
Prime minister
A prime minister is the most senior minister of cabinet in the executive branch of government in a parliamentary system. In many systems, the prime minister selects and may dismiss other members of the cabinet, and allocates posts to members within the government. In most systems, the prime...

 John Howard
John Howard
John Winston Howard AC, SSI, was the 25th Prime Minister of Australia, from 11 March 1996 to 3 December 2007. He was the second-longest serving Australian Prime Minister after Sir Robert Menzies....

 and then-leader of the opposition Kevin Rudd
Kevin Rudd
Kevin Michael Rudd is an Australian politician who was the 26th Prime Minister of Australia from 2007 to 2010. He has been Minister for Foreign Affairs since 2010...

 in 2007 and between prime minister Julia Gillard
Julia Gillard
Julia Eileen Gillard is the 27th and current Prime Minister of Australia, in office since June 2010.Gillard was born in Barry, Vale of Glamorgan, Wales and migrated with her family to Adelaide, Australia in 1966, attending Mitcham Demonstration School and Unley High School. In 1982 Gillard moved...

 and opposition leader Tony Abbott
Tony Abbott
Anthony John "Tony" Abbott is the Leader of the Opposition in the Australian House of Representatives and federal leader of the centre-right Liberal Party of Australia. Abbott has represented the seat of Warringah since the 1994 by-election...

 in 2010.

In the first UK general election debate on April 15, 2010 between Labour Prime Minister Gordon Brown, Conservative leader David Cameron and Liberal Democrat leader Nick Clegg, "the worm" was used in certain segments. A study published in March 2011 suggests that the worm may influence voters.

In New Zealand, the worm has been controversially credited for increasing the support for United Future leader Peter Dunne
Peter Dunne
Peter Dunne is a New Zealand politician and Member of Parliament who leads the United Future political party. He has served as a Cabinet minister in governments dominated by the centre-left Labour Party as well as by the centre-right National Party...

in the 2002 election.

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