I want to recommend a book for your law library, Psychology for Lawyers by Jennifer Robbennolt and Jean Sternlight. (ABA 2012). Here’s the abstract:
Lawyers who can harness the insights of psychology will be more effective interviewers and counselors, engage in more successful negotiations, conduct more efficient and useful discovery, more effectively persuade judges and others through their written words, better identify and avoid ethical problems, and even be more productive and happier....