This document discusses several personality traits relevant to organizational behavior: 1) Core self-evaluation refers to how positively or negatively one views themselves, with positive self-evaluation linked to better job performance and negative views linked to poorer performance. 2) Machiavellianism describes pragmatic, emotionally distant individuals who believe the ends justify the means and can be manipulative to achieve power and influence, flourishing with direct interaction and minimal rules. 3) Narcissism involves arrogance and entitlement where people need excessive admiration but are less effective in their jobs.