Chapter 2 (literature review) before, and I received it last year but I have to add information about the following theories and its implications, criticism and limitation : 1) Technology Acceptance Model 2 (TAM2). 2) ADKAR Model. 3) Lewin’s 3 stage change model. 4) The Theory of Reasoned Action (TRA) 5) The Theory of Planned Behaviour (TPB). 6) Kotter’s 8 phases of change.