Dr. Andrew Perrin discussed the ontological claims and social theory which run beneath ideas of genetic causation of behavioral traits. He outlined five criteria for evaluating and conceptualizing the environment within genetic studies. He concluded by emphasizing complexity and describing gene-environment interaction chains. To watch Dr. Perrin’s presentation, please see the Panel 2 “Google Video posting.”:http://video.google.com/videoplay?docid=-8804321603731619003&hl=en