These include, but are not limited to, the Theory of Reasoned Action (TRA, Ajzen & Fishbein, 1980), the Theory of Planned Behavior (TPB, Ajzen, 1991), the Technology Acceptance Model (TAM, Davis, 1989), the Decomposed Theory of Planned Behavior (DTPB, Taylor & Todd, 1995b), the combined model of TAM and TPB (C-TAM-TPB, Taylor & Todd, 1995a), the Motivational Model (MM, Davis, Bagozzi, & Warshaw, 1992) the Model of PC Utilization (MPCU, Triandis, 1977), the Innovation Diffusion Theory (IDT, Rogers, 1995), and the Social Cognitive Theory (SCT, Bandura, 1986).