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Contemporary personality research generally adopts an interactionist model, whereby traits and situationally sensitive states interact in influencing behavioural outcomes. However, some support for the casual nature of the Big Five has been forthcoming (Paunonen and Ashton, 2001). For example, it has been argued that individuals vary on each of these five trait dimensions in line with a normal curve distribution and that the factors are at least partially genetically predetermined (Jang, et. al., 2002, Loehlin et. al., 1998).