1 Supplier Selection Behavior under Uncertainty: Contextual and Cognitive Effects on Risk Perception and Choice << Accepted for Publication in Decision Sciences, January 2014>> Thomas J. Kull † , Adegoke Oke, and Kevin J. Dooley Department of Supply Chain Management, WP Carey School of Business, Arizona State University, Tempe, AZ 85287-4706 e-mail: Thomas.Kull@asu.edu, Adegoke.Oke@asu.edu, Kevin.Dooley@asu.edu † Corresponding author.