Garb Questions

1. This paper is taken from a special issue on the incremental validity of psychological assessment across different sorts of measures, different sorts of questions, and different sorts of populations. As Garb (2003) describes it, what is incremental validity? Is it important? Why or why not?
2. For what psychological assessment measures does Garb (2003) cite evidence of incremental validity? Why do you think those measures seem to possess incremental validity?
3. For what psychological assessment measures does Garb (2003) conclude that there is little or no evidence for incremental validity? Why do you think this might be so?
4. Do you agree with the recommendations Garb (2003) makes for clinical practice? Why or why not?