The Silvan S. Tomkins Institute Membership. We invite you to become a member of the Institute so that you may continue to learn about affect/script theory, receive our publications, and participate in our activities and seminars. This membership includes access to a member’s only message board. All membership items include an application to be completed when you add this item to your shopping basket. All applications will be reviewed by an administrator before admittance or access to any website member feature.