Written to be accessible, each book in this series provides: quick and easy-to-read summaries of key ideas and key thinkers intended to enable students to attain and assimilate knowledge quickly; features that track the history of each idea, the idea in action today, the debate that surrounds it and its practical application; and a reference resource for AS/A2 Level courses, and students progressing to further study. They demonstrate how the thinker/s ideas can or have had practical applications, outlining contemporary research relevant to the ideas and provide suggestions for further reading. They are suitable for AS/A Level courses and AVCE courses for all awarding bodies and are also relevant for undergraduate and BTEC National and HNC/D courses.