New indicators of technological change in the US based on information drawn from the catalogue of the Library of Congress for the period 1909-1949 are developed and used to pinpoint the relationship, first, between technical change and economic activity, and, second, between fluctuations in...

New indicators of technical change based on titles included in the catalogue of the Library of Congress and on Amazon.com's website are presented along with evidence that they do capture technological innovation. The indicators are used to chart the pattern and nature of technical change over...

Reports research into the sexual behaviour of UK teenagers at the margins of society, the project was a response to the Social Exclusion Unit’s brief to reduce the rate of teenage conceptions and to move teenage parents into education, training or employment. Focuses on the issues of...