American Psychological Association
The APA is a professional psychology organization. Becoming a graduate student affiliate member of the APA provides great opportunities for professional development, including access to a graduate student network, subscriptions to journals, and discounted registration to APA's annual convention.
American Psychology-Law Society
The American Psychology-Law Society is a division (Division 41) of APA. Graduate student membership includes a subscription to the journal, Law and Human Behavior, as well as the APLS newsletter.