Citation needed.
Watch the video here: https://twitter.com/ProfLAppleby/status/917838820682489858?s...
The initial claim was 'usually turn violent', compared to your 'relatively good predictor of violent behaviour'.
I've known quite a few people with drug dependency problems and very, very few of them were violent.
So, citation still needed.
Watch the video here: https://twitter.com/ProfLAppleby/status/917838820682489858?s...