jm + evidence   4

The Impenetrable Program Transforming How Courts Treat DNA Evidence | WIRED
'So the lab turned to TrueAllele, a program sold by Cybergenetics, a small company dedicated to helping law enforcement analyze DNA where regular lab tests fail. They do it with something called probabilistic genotyping, which uses complex mathematical formulas to examine the statistical likelihood that a certain genotype comes from one individual over another. It’s a type of DNA testing that’s becoming increasingly popular in courtrooms. '

[...] 'But now legal experts, along with Johnson’s advocates, are joining forces to argue to a California court that TrueAllele—the seemingly magic software that helped law enforcement analyze the evidence that tied Johnson to the crimes—should be forced to reveal the code that sent Johnson to prison. This code, they say, is necessary in order to properly evaluate the technology. In fact, they say, justice from an unknown algorithm is no justice at all.'
law  justice  trueallele  software  dna  evidence  statistics  probability  code-review  auditing 
12 days ago by jm
Screen time guidelines need to be built on evidence, not hype | Science | The Guardian
An open letter signed by about 100 scientists 'from different countries and academic fields with research expertise and experience in screen time, child development and evidence-based policy.'
If the government were to implement guidelines on screen-based technology at this point, as the authors of the letter suggest, this would be on the basis of little to no evidence. This risks the implementation of unnecessary, ineffective or even potentially harmful policies. For guidelines to have a meaningful impact, they need to be grounded in robust research evidence and acknowledge that children’s health and wellbeing is a complex issue affected by many other factors, such as socioeconomic status, relational poverty, and family environment – all of which are likely to be more relevant for children’s health and well-being than screens. For example, there is no consistent evidence that more screen time leads to less outdoor play; if anything the evidence indicates that screen time and physical outdoor activity are unrelated, and reductions in average time spent in outdoor play over time seem to be driven by other factors. Policy efforts to increase outdoor play that focus on screen time are therefore likely to be ineffective.


(via Damien Mulley)
via:damienmulley  science  children  psychology  screens  screen-time  childhood  development  evidence  policy  health  open-letters 
june 2017 by jm
Placebo effects are weak: regression to the mean is the main reason ineffective treatments appear to work
“Statistical regression to the mean predicts that patients selected for abnormalcy will, on the average, tend to improve. We argue that most improvements attributed to the placebo effect are actually instances of statistical regression.”
medicine  science  statistics  placebo  evidence  via:hn  regression-to-the-mean 
december 2015 by jm
Big Brother Watch on Twitter: "Anyone can legally have their phone or computer hacked by the police, intelligence agencies, HMRC and others #IPBill https://t.co/3ZS610srCJ"
As Glynn Moody noted, if UK police, intelligence agencies, HMRC and others call all legally hack phones and computers, that also means that digital evidence can be easily and invisibly planted. This will undermine future court cases in the UK, which seems like a significant own goal...
hmrc  police  gchq  uk  hacking  security  law-enforcement  evidence  law 
december 2015 by jm

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