Slashdot Mirror
UK Police Want DNA of 'Potential Offenders'
mrogers writes "British police want to collect DNA samples from children as young as five who 'exhibit behavior indicating they may become criminals in later life'. A spokesman for the Association of Chief Police Officers argued that since some schools already take pupils' fingerprints, the collection and permanent storage of DNA samples was the logical next step. And of course, if anyone argues that branding naughty five-year-olds as lifelong criminals will stigmatize them, the proposed solution will be to take samples from all children."
This is called the Pygmalion effect. The test results change the teacher's expectations, and the teacher's expectations influence the kids' future performance. It has also been shown that teachers have different expectations of children based on race and sex, which affect children's performance as they fulfill these expectations. But it's a widespread phenomenon outside the classroom as well.