An Empirical Testing of the Theory of Planned Behavior in Explaining IT Adoption

An Empirical Testing of the Theory of Planned Behavior in Explaining IT Adoption looks at Azjdens model in relation to E-TAM.

Conclusions were:

"In spite of these limitations, the study contributed in several ways as mentioned above. Some additional general observations about TAM/TPB models can be made. The TAM is a baseline and simple model that is useful in predicting attitude and intention, as has been observed many times in research; however, the TPB model is also important and more general in nature, as introduced in the constructs SN and PBC. Among these constructs, PBC is the most significant across all IT products. This is in consonance to the observation made by Karahanna et al. (1999), that addition of the perceived behavioral control (PBC) construct may provide further insights and increase the explained variance of the theoretical model of technology adoption."