Criminological research has largely neglected the possibility that positive peer influence is a potentially powerful source of social control. Quantitative methods tease out cause, effect, and spuriousness in the relationship between peer delinquency and personal delinquency, but these methods do little or nothing to reveal how and why peers might influence each other toward--or away from--deviance. Costello and Hope take a first step toward uncovering the mechanisms of peer influence, drawing on quantitative and qualitative data collected from two convenience samples of university students. Their quantitative analyses showed that positive peer influence occurs most frequently among those who associate with the most deviant peers and self-report the most deviance, contrary to predictions drawn from social learning theories. Their qualitative data revealed a variety of methods of negative influence, including encouraging deviant behavior for others' amusement, a motive for peer influence never before reported in the literature.

Criminological research has largely neglected the possibility that positive peer influence is a potentially powerful source of social control. Quantitative methods tease out cause, effect, and spuriousness in the relationship between peer delinquency and personal delinquency, but these methods do little or nothing to reveal how and why peers might influence each other toward--or away from--deviance. Costello and Hope take a first step toward uncovering the mechanisms of peer influence, drawing on quantitative and qualitative data collected from two convenience samples of university students. Their quantitative analyses showed that positive peer influence occurs most frequently among those who associate with the most deviant peers and self-report the most deviance, contrary to predictions drawn from social learning theories. Their qualitative data revealed a variety of methods of negative influence, including encouraging deviant behavior for others' amusement, a motive for peer influence never before reported in the literature.

Scientists, educators, and parents of teens have long recognized the potency of peer influences on children and youth, but until recently, questions of how and why adolescents emulate their peers were largely overlooked. This book presents a comprehensive framework for understanding the processes by which peers shape each other's attitudes and behavior, and explores implications for intervention and prevention. Leading authorities share compelling findings on such topics as how drug use, risky sexual behavior, and other deviant behaviors "catch on" among certain peer groups or cliques; the social, cognitive, developmental, and contextual factors that strengthen or weaken the power of peer influence; and the nature of positive peer influences and how to support them.

In the style of Nudge or The Spirit Level - a groundbreaking book that will change the way you look at the world. Tina Rosenberg has spent her career tackling some of the world's hardest problems. The Haunted Land, her searing book on how Eastern Europe faced the crimes of Communism, was awarded both the National Book Award and the Pulitzer Prize in the US. In Join the Club, she identifies a brewing social revolution that is changing the way people live, based on harnessing the positive force of peer pressure. Her stories of peer power in action show how it has reduced teen smoking in the United States, made villages in India healthier and more prosperous, helped minority students get top grades in college calculus, and even led to the fall of Slobodan Milosevic. She tells how creative social entrepreneurs are starting to use peer pressure to accomplish goals as personal as losing weight and as global as fighting terrorism. Inspiring and engrossing, Join the Club explains how we can better our world through humanity's most powerful and abundant resource: our connections with one another.