Machiavellian traits include deception, manipulation, and high self-interest. The Mach-IV test can measure if someone shows Machiavellian personality traits. People with Machiavellian traits may ...

Forbes contributors publish independent expert analyses and insights. I write about relationships, personality, and everyday psychology. Research sheds light on the manipulative nature of ...

In the cutthroat world of corporate leadership, being strategically cunning may pay off—literally. Researchers at the University of Florida's Warrington College of Business recently published a study ...

Personality disorders can significantly affect your daily life, work, and relationships. Your treatment plan may involve psychotherapy and medication to manage your symptoms. Personality disorders are ...

Diagnosing personality disorders in children is controversial due to natural developmental shifts in mood and behavior. When maladaptive traits remain pervasive and persistent, however, a personality ...