When a lawyer needs an expert witness I assume he looks for three things:
- Unimpeachable credentials
- Motivation to support his case
- The ability to favorably impress a jury, via a compelling demeanor and convincing, lucid, and engaging testimony.
For commonly litigated fields like medicine I assume there are directories and services for experts? But what about less common fields? Maybe statistics, ballistics, chemistry, applied physics?
Or, looking at this question another way: Suppose I am an expert in a field and I have been told that I have a gift for engaging a lay audience in it. How might I alert interested lawyers to my willingness to serve as an expert witness? Is there a competitive market for expert witnessing?