| TPB | The theory explains that people's behavior is connected to various beliefs. The theory pinpoints three main components that shape behavioral intentions: attitude, subjective norms and perceived behavioral control, (Source: Ajzen, 1991) | TPB does not wholesomely explain human behavior as others variables are deemed vital to explain intentions, such as fear, mood, or past experience (Davis et al., 1989) |
| TPB considers normative influences, but does not take into account environmental, emotional, or economic factors that may influence behavior intention (Mehrabian & Russell, 1974; Belanche et al., 2019) |
| TPB may not be suitable for technology as it does not reflect product features (Sindhu and Namratha, 2019) |
| TAM | The theory explains that there are two factors that determine whether a computer system will be accepted by individuals: perceived usefulness, and perceived ease of use. (Source: Davis, 1989) | TAM ignores the influence of individual differences and environmental variables (Bagozzi, 2007; Marangunić & Granić, 2015; Momani, 2020) |
| TAM focuses on cognition (comprehend through rationalization and experience) rather than affect (comprehend through emotions and moods) (Momani, 2020; Almomani et al., 2022) |
| PAD | The theory explains that pleasure, arousal and dominance reflect the assorted people's feelings and emotional reactions toward objects. (Source: Mehrabian & Russell, 1974) | PAD measures consumers' emotional responses, ignoring the drive that initially allowed consumers to consider the technology usage (Koufaris, 2002) |
| PAD neglects product-related and environment features that encourage technology acceptance (Momani, 2020) |
| PAD ignores people's propensity to embrace and use new technologies to accomplish goals in home life and at work (Parasuraman, 2000) |
| TRI | The theory explains the emotions (positive and negative technology-related reactions: optimism, innovativeness, discomfort and insecurity) that consumers feel toward using new technologies, regulating its usage tendency (Source: Parasuraman, 2000) | TRI focuses on consumers' traits in explaining technology usage, neglecting the product features as well purpose (Parasuraman, 2000). |
| TRI does not mention the technology relative importance (Momani, 2020) |