2.5.4 Technology Acceptance Model (TAM)
The Technology Acceptance Model (TAM) also has used widely by researchers and practitioners to predict and make sense of user acceptance of technology (Valtonen et al., 2015; Zha et al., 2013; Aggorowati et al., 2012; Nair & Das, 2012; Hong et al., 2011; Jan & Contreras, 2011; Zhang et al., 2011; Park, 2009; Colesca & Dobrica, 2008). Shajari and Ismail (2013) asserted that TAM is the model which has frequently used and most cited model among the other adoption models. Moreover, Aggorowati et al. (2012) noted that identification of user acceptance for a new technology and constrain that influence the user acceptance are the goals of TAM studies. This model originally proposed by Davis in 1989. TAM model
TAM model is simple and easy to use and more powerful to uncover what determines user acceptance of IT (Sadeghi & Farokhian, 2010). The TAM was proposed by Davis, (1989) and Davis et al. (1989) to describe why a user accept or rejects IT by adapting TRA. Hong et al. (2011) noted that extend to which individuals’ acceptance or rejection of new technology can be understood and explained by using TAM. This model provides a basis with which one traces how external variables influence on internal variables of perceived usefulness, perceived ease of use, attitude, and intention to use. Nair and Das, (2012) asserted that perceived ease of use and perceived usefulness are considered as independent variables in TAM and perceived ease of use and perceived usefulness influence on the attitude towards use, then attitude become as dependent variable. TAM posits two cognitive beliefs namely perceived usefulness and perceived ease of use and it shows that perceived usefulness is influenced by the perceived ease of use and has shown a positive influence (Pai & Huang, 2011 cited from Hung et al., 2005). Because, if the system is easier to use, then
Introduction and validation period falls to 1986 – 1995. TAM was subjected to extend during 1994 – 2003 and elaboration was started in 2000. Then, Venkatesh and Bala (2008) continue further modification to TAM and presented TAM 3. Thus within three decades, TAM was modified as TAM 2 (Venkatesh & Davis, 2000) and as TAM 3 (Venkatesh & Bala, 2008). Accordingly, a brief explanation of the extended TAM 2 and TAM 3 are presented in coming