In this review, we identify emerging trends in negotiation scholarship that embrace complexity, finding moderators of effects that were initially described as monolithic, examining the nuances of social interaction, and studying negotiation as it occurs in the real world. We also identify areas in which research is lacking and call for scholarship that offers practical advice. All told, the existing research highlights negotiation as an exciting context for examining human behavior, characterized by features such as strong emotions, an intriguing blend of cooperation and competition, the presence of fundamental issues such as power and group identity, and outcomes that deeply affect the trajectory of people's personal and professional lives. Expected final online publication date for the Annual Review of Psychology, Volume 74 is January 2023. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.