Network models of the diffusion of innovations

Part 1 Introduction: Diffusion of Innovations and Network Analysis; Diffusion Versus Collective Behaviour; Datasets Analysed; Contagion. Part 2 Prior Research on Thresholds and the Critical Mass: Epidemiology; Geography; Markets and Economics; Collective Behaviour; Interactive Communication Technologies; Public Opinion; Decay Processes; Subgroups. Part 3 Relational Diffusion Networks: Opinion Leadership; Group Membership; Personal Network Density; Personal Network Exposure. Part 4 Structural Diffusion Networks: The Strength of Weak Ties; Centrality; Positional Equivalence; Structural Equivalence; Relational vs. Structural. Part 5 Threshold Models of Diffusion: Threshold Models; Network Thresholds; Personal Network Exposure; Threshold Lags; Structural Network Thresholds. Part 6 Critical Mass Models of Diffusion: Inflection Points; Structural Measures of the Critical Mass; Finding Critical Mass; Testing Critical Mass Definitions. Part 7 Empirical Analyses of Threshold Models: Micro- and Macrolevels of Analysis; Adopted Categories; A Threshold/Critical Mass (T/CM) Model. Part 8 Other Network Models and Methods: Other Threshold Models; Corrected Thresholds; Event History Analysis; Complementarity; Dyads. Part 9 Conclusions and Discussions: Applications; Contrasting Network Thresholds with the Classic Diffusion Model; Conclusions; Limitations; Future Research.