More than 25 years of research and practice as an industrial-organizational psychologist has reinforced my belief that toxic leaders exhibit stable, measurable characteristics--characteristics that represent more than the mere absence of "good" qualities. As a result, my work focuses on identifying individuals who combine malignant narcissism with antisocial personality--a poisonous mix that I call "aberrant self-promotion." "Aberrant self-promoters" (ASPs) are organizational psychopaths (AKA sociopaths). Like psychopaths (or sociopaths), ASPs attempt to exploit, bully, intimidate, manipulate, lie to, cheat, and “seduce” everyone within their sphere of influence. They are particularly dangerous in security-sensitive positions and in roles that confer power over material and/or human resources. Yet, because ASPs can impress interviewers with their "charm" and "savvy"--and because they can often outwit traditional personality measures--they are likely to escape detection until they wreak havoc.To thwart ASPs' being hired or promoted, I use a "conditional reasoning" (CR) test that identifies them during initial appraisals. CR is an elegant methodology; it presents items that mimic those found in the logic sections of assessments like the GRE or the LSAT. The description in the Success Exceleration, LLC segment, below, provides more detail. The ASP assessment instrument, called the Logical Analysis Measure (LAM), is virtually immune to manipulation. It takes 20 minutes to complete and is administered online. To learn how the LAM functions and to review the evidence that supports its validity, check out the downloads attached to my website: www.success-exceleration.com.