Table 2.
Constructs from relevant theories explaining the acceptance/adoption of information technology by users.
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Constructs emerged | HITAM [10] | TAM [7] | TAM 2 [11] | UTAUTa [12] | Attributes of innovation [8] | Adoption of information technology innovation [13] | Innovation adoption model [14] |
| IT factors | HIT characteristics | HIT characteristics |
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Perceived usefulness | Perceived usefulness | Perceived usefulness | Perceived usefulness |
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Perceived ease of use | Perceived ease of use | Perceived ease of use | Perceived ease of use |
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Ease of use |
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Output quality |
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Output quality |
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Product performance |
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Product performance |
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Performance expectancy |
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Performance expectancy |
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Customizability |
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Customizability |
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Observability |
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Observability |
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Observability |
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Result demonstrability |
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Result demonstrability |
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Result demonstrability |
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Visibility |
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Visibility |
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Communicability |
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Communicability |
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Discontinuity |
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Discontinuity |
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Category risk |
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Category risk |
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Image |
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Image |
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Image |
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Job relevance |
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Job relevance |
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Complexity |
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Complexity |
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Complexity in use |
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Complexity in use |
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Complexity in design |
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Complexity in design |
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Trialability |
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Trialability | Trialability | Trialability |
| Personal factors | Demographic variables | Demographic variables |
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Gender, age |
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Subjective norm | Subjective norm |
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Subjective norm |
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HIT self-efficacy | HIT self-efficacy |
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Experience |
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Experience | Experience |
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Effort expectancy |
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Effort expectancy |
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Personal compatibility |
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Personal compatibility |
| Social factors | External variables |
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External variables |
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Social influence |
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Social influence |
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Facilitating conditions |
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Facilitating conditions |
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Compatibility |
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Compatibility | Compatibility |
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Social compatibility |
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Social compatibility |
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Relative advantage |
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Relative advantage | Relative advantage | Relative advantage |
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Social advantage |
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Social advantage |
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Relative economic advantage |
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Relative economic advantage |
| Attitude |
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Attitude | Attitude |
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| Behavioral intention |
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Behavioral intention | Behavioral intention to use | Intention to use | Behavioral intention |
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Volition |
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Volition |
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Voluntariness |
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Voluntariness | Voluntariness of use |
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Voluntariness |
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| Behavior |
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Behavior | Actual system use | Usage behavior | Use behavior |
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aUTAUT: Unified Theory of Acceptance and Use of Technology