The intention for usage has a significant and positive impact on the actual use of the system.
The TAM inherits the basic idea of the Theory of Reasoned Action and states that internal beliefs will influence "attitude", which will further influence the intention for usage.
Higher usage rate for social media platforms such as Facebook can also be explained by high intention of use (Rauniar et al., 2014).
Second, follow-up studies could compare students' continued usage intention of weblogs use for learning MIS and related courses.
In-depth and comprehensive studies of Davis (1989) and Davis et al. (1989) revealed that PU is a stronger driver of usage intention compared to PEOU.
Functional user requirements generally concern the clinical value/targeted performance, while non-functional requirements mostly concern ease of use, both of which are considered important determinants of usage intention and subsequent usage behaviour [ 13, 14].
Comparing these findings with frequently used IT adoption models such as the Unified Theory of Acceptance and Use of Technology [ 14], the lack of association between system use and professionals' expectancies regarding the system's performance is surprising, as performance expectancy is considered a direct determinant of usage intention and subsequent usage behaviour [ 14].
On the contrary, Facebook is pushing people to do the opposite: Give it more of their personal information — and fuzzing why it's asking by bundling a range of usage intentions.
Studies investigating this model in health care have consistently shown perceived usefulness (i.e. the degree to which a person believes that using a particular technology will enhance his or her job performance) to be a strong determinant of usage intentions [ 8- 10].
In turn, UTAUT is based on four determinants of intention and usage: performance expectancy, effort expectancy, social influence and facilitating conditions.
Moreover, consumer engagement positively influenced users' intention to continuous usage of mobile applications.
