The current investigation examined the consistency of two different types of procedural knowledge as measured by a single-response Situational Judgment Test (SJT) across three different professions, including those of a physician, volunteer, and human factors professional (HFP). The first of these types of knowledge refers to Implicit Trait Policies (ITPs), which represent general procedural knowledge as measured by an SJT and have been shown to account for variance in job performance (Motowidlo & Beier, 2009). The second class of knowledge involves a bifurcation of the knowledge construct into knowledge about effective and ineffective interpersonal interactions at work. Undergraduates ( N = 152) completed a personality measure and an abbreviated version of three single-response SJTs created for medical students, volunteers, and FIFPs. Results suggest that there is moderate consistency in knowledge about effective and ineffective behavior across different jobs and that each type of knowledge is differentially related to personality traits.