Although social cognitive theory has strongly influenced cognitive behavioral models of psychopathology and treatment, it has had far less influence on approaches to clinical personality assessment and case conceptualization. A primary obstacle has been the difficulty of translating social cognitive assessment principles into practical clinical assessment methods. The purpose of the present paper was to describe a cognitive behavioral case conceptualization procedure informed by a social cognitive personality assessment, one that the average cognitive behavioral therapist would be able to implement. To execute a social cognitive personality assessment, we argue that the clinician must perform four tasks: (a) identify personality structures, (b) identify if-then personality signatures, (c) map personality structures to if-then personality signatures, and (d) integrate social cognitive assessment data to form an evidence-based case conceptualization. For each of these four social cognitive personality assessment tasks, we describe an assessment procedure and then illustrate it using a case illustration of a depressed and anxious woman who presented at a psychology clinic. We conclude by discussing advantages, limitations, and possible future directions for further development of social cognitive personality assessment measures and case conceptualization procedures.