What is representation?
is the area of study where we look at how different groups of people, or places, or ideas, or whatever, are shown in the media. For example, how are black or Chinese or teenaged people usually presented? How is Hong Kong or Iran represented? How about Christian, Muslim or Buddhist belief systems?

EXAMPLE:
This is a very recogniseable representation - the young, aggressive black man. We have seen this representation many, many times; it is a
STEREOTYPE. or what we might call a
DOMINANT REPRESENTATION. How is the representation constructed?
Think of the general representation as a building. It is made up of many different ‘bricks’ which we call SIGNS. Some of the signs in this particular image are the gun, the muscles, the tattoos, the designer-label holster, the stare, the ‘bling’, the crucifixes. The study of these signs is called SEMIOTICS.
A Dummy’s guide to SEMIOTICS.
One name that might be useful is
SAUSSURE. Ferdinand Saussure - the father of semiotics - divided each sign up into the
SIGNIFIED and the
SIGNIFIER. Referring back to 50 Cent above, one signifier might be his gun. What is signified by this object is aggression, power, anger. These two things together - the signifier and the signified - equal the sign.

Charles
PEIRCE took this idea a little further, saying that there were three different types of sign; the
ICON, the
INDEX and the
SYMBOL.
An
ICON looks like the thing it represents. You know which toilet to use (hopefully) because the symbols look like men and women.

An
INDEX is somehow linked to the thing it represents. Why is the colour gold used to represent wealth? Because of the established link between gold and wealth. Here we see Michael Phelps advertising Visa; note the golden palette which functions as an idex of wealth or success.

A
SYMBOL is completely arbitrary. There is no logical connection between signifier and signified. We simply learn to understand the connection. Why does the heart represent love and not the lungs? How can a piece of paper represent financial value? Why does a man’s tie represent respectability? We have been taught to associate certain SIGNIFIERS -this man's clothes and hairstyle, for example - with certain SIGNIFIED things - respectability or competence, perhaps (or tedium, perhaps, depending on our
SITUATED CULTURE; that is, the background we are born into and raised in, and the cultural, social, political, economic, historic or whatever environment which shapes us.)

WHO CARES?
Good question. Rather a lot of people, as it turns out. Representations like that of 50 Cent above are annoying or offensive to a lot of people. Are young black men often represented like that? Is it a dominant representation? If so, is it likely that people will expect young black men to be like that - violent, aggressive, criminal and so on? Do young black men, surrounded by that particular representation of masculinity, think that they SHOULD be like that?
There can be more specific examples.
OJ Simpson was an extremely famous sportsman and actor in the US in 1994 when he was charged with the murder of his ex-wife and her new partner. His police photo (on the left) was reproduced on the cover of
Time magazine, as shown here.


Note how the image has been darkened and shadows added. The
SEMIOTIC CODES have been changed - in Sausurrian terms, the SIGNIFIERS have been changed.
Why was this done? The obvious effect seems to be to make him look ‘meaner’ or ‘darker’ and, ultimately, more likely to be guilty of his wife’s murder. This caused an enormous scandal and Time were ultimately forced to issue an apology. Subsequently, laws were introduced making such photo manipulation illegal in the media.
Why was this so offensive? The magazine producers seem to be making a link between Simpson’s colour and violence; the darker he is, the more violent he is likely to be. In Peircean terms, they are making his colour into an INDEX - black skin, it seems, indicates violence. Such ideas and representations, of course, have been around for a long time, and it is rather surprising to see a respected publication like
Time reinforcing them.