David 
                        Krackhardt
                                            
                            
                                                                                                                                                                    Professor of Organizations and Public Policy,  H. John Heinz III College and the Tepper School of Business
                            
                
                        
                            
        
                
                
                    Bio
            Organizational behavior and theory, power and conflict management, human resources management, statistical and mathematical research methods, and social network analysis.