Table 4.
Contents, mean of the scores, and the frequency of the responses for the questionnaire.
| Content | Mean (SD) | Disagree (%) | Neutral (%) | Agree (%) | ||
| Behavioral intention | BI_1 | I intend to continue using this system after the experiment is over. | 3.39 (1.06) | 17.9 | 32.1 | 50 |
| BI_2 | I intend to use this system after the experiment is over. | 3.31 (1.05) | 17.3 | 40.5 | 42.1 | |
| BI_3 | When an opportunity to use this system arises, I will use it. | 3.52 (1.00) | 12.6 | 33.2 | 54.2 | |
| BI_4 | I intend to use this system with a smartphone over dependence management service. | 3.45 (0.96) | 13.7 | 34.7 | 51.6 | |
| BI_5 | If possible, I don't intend to use this system anymore. | 3.34 (1.19) | 49 | 26.3 | 24.7 | |
| Performance expectancy | PE_1 | This system will help control the usage of smartphones. | 3.68 (0.90) | 10 | 26.3 | 63.7 |
| PE_2 | Using this system will be effective in controlling smartphone usage. | 3.65 (0.89) | 10 | 30.0 | 60 | |
| PE_3 | By using this system, it seems that unnecessary use of smartphones can be reduced. | 3.60 (0.95) | 13.2 | 30.0 | 56.9 | |
| PE_4 | By using this system, it will be easier to control and manage smartphone usage. | 3.63 (0.93) | 11.1 | 31.6 | 57.4 | |
| Effort expectancy | EE_1 | This system is easy to understand and simple. | 3.84 (0.78) | 5.3 | 23.7 | 71 |
| EE_2 | I can use this system skillfully. | 3.76 (0.76) | 3.2 | 34.2 | 62.6 | |
| EE_3 | I think this system is easy to use. | 3.85 (0.85) | 4.7 | 28.4 | 66.9 | |
| EE_4 | I think learning (installation, setting, operation) to use this system is easy. | 3.75 (0.83) | 5.8 | 32.1 | 62.1 | |