Abstract:

What I plan to do is to speak rather narrowly to the subject which was - you recall - the cost of effectiveness of different media and in doing so, to touch upon each of the papers though not in any case at any great length, as that's really more for the open discussion I think. I shall be talking about experiences derived or known about in the United Kingdom and the United States only, partly because there is a wider media choice there in those two countries than in many other countries, and partly because that is where my experience lies.