Monday, 19 March 2007

O problema dos rankings e estatísticas

Do Economist de 1 de Março a propósito do efeito perverso do ênfase em objectivos quantitativos para as políticas:
The Labour government has built an elaborate edifice of targets and monitoring, with the aim of proving that higher spending on public services has been good value for money. Performance is often measured according to figures produced by the very organisations being judged.
Naturally, people play tricks and stretch definitions in order to meet their targets. Schools, for instance, are ranked according to how many students get five GCSEs at grade C or above—so young people are steered towards easier subjects and those at the borderline between D and C get most attention. Hospitals are not supposed to keep patients waiting more than 20 weeks for non-urgent operations—so some make everyone wait 18 weeks. Emergency units are punished for keeping patients waiting more than four hours—so some admit patients before four hours are up and then keep them hanging about.

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