"The H Factor is a tour de force. Anchored in solid scientific research, it offers fascinating insights into how previously neglected aspects of personality influence people's strategies about power, social hierarchies, money, and sex. And it offers sound practical advice for navigating the social world of some unsavory characters. It's a ‘must-read.’'' (David M. Buss)

"A timely addition to the growing volume of literature that aims to present a more thorough picture of human behaviour. With its focus on the newly discovered Honesty-Humility (H) factor of personality, as subsumed by the HEXACO model and defined by traits such as deceitfulness, pretentiousness, and boastfulness at the low end, it tackles the complex theme of sub-clinical social malevolence in a manner that is ultimately accessible to most readers. By blending narrative and anecdotal content with summaries of statistical methodology, the authors deliver a comprehensive yet concise introduction to personality's latest newcomer - the H factor.... [The presentation] proves helpful for researchers interested in the breadth of influence of the new H factor, as well as for laypeople curious about the impact and expression of the H-factor tendencies in their own lives.... An indispensable resource for those looking for a comprehensive introduction to the HEXACO model, those curious about the direction of personality research, or those seeking a meaningful dissection of antisocial behaviour. In contrast to the depth and sometimes gravity of the subject matter discussed, the authors' familiar tone and casual style allow for an effortless learning experience. As a result, the book is a refreshing and welcome addition to the ongoing debate regarding universal language in the study of human personality.'' (Livia Veselka, Personality and Individual Differences, 2013)

"Kibeom Lee and Michael Ashton, two leading figures in the science of personality, reveal some surprising facts about Honesty-Humility, a profound but misunderstood aspect of personality. Everyone from the sincere and scrupulous to the sly and duplicitous will look at themselves - and most certainly at other people - in a new light.'' (Paul Silvia)