The main reason that it is so difficult to predict dangerousness is that

The main reason that it is so difficult to predict dangerousness is that

1. No relevant, valid measured exist to measure this behavior.
2. Most clinicians refuse to work with clients who have been assaultive in the past, so little data is available to use in making such predictions.
3. Dangerousness is often comorbid with drug and alcohol abuse which renders our instruments much less reliable
4. The base rate for such behaviors is very low for most groups of people.