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| Construction | Code | Items |
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| Social image concerns (SIC) | SIC1 | I pay attention to my image in the eyes of other users, especially my real friends |
| SIC2 | I am worried that acquaintances will see the videos I give praise in real life (such as family, friends, and leaders) |
| SIC3 | It makes me worried that the praised content will give people the impression that I am a certain kind of person, for example, complimenting rustic videos will give others a sense of low interest |
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| Information redundancy concerns (IRC) | IRC1 | I think praising videos are for collecting valuable content; videos without collection value are not worthy of my likes |
| IRC2 | I am worried that too many contents I praised make it inconvenient to find them later |
| IRC3 | I am worried that too much similar information will make it inconvenient to find in the future |
| IRC4 | I am worried that the platform will always push me to similar information after praising certain information too much |
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| Information disclosure concerns (IDC) | IDC1 | I am afraid that the short video platform may use my private information without my knowledge |
| IDC2 | I am afraid that the short video platform may sell my information for profit without my consent |
| IDC3 | I am worried that the short video platform may obtain my information and use it for other purposes through my usage behavior, for example, to analyze my daily likes to get my interests and preferences |
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| Video quality defects (VQD) | VQD1 | I would not praise videos with poor picture quality |
| VQD2 | I would not praise videos whose background music is not beautiful or suitable |
| VQD3 | I would not praise videos that are not aesthetic enough |
| VQD4 | I would not praise videos whose editing quality is not good enough |
| VQD5 | I would not like videos with inappropriate copywriting |
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| Content value deviation (CVD) | CVD1 | I had the impulse to praise a good video, but I did not praise it in the end because the motivation was not strong enough |
| CVD2 | I would not praise videos that are good in content but not far more innovative than other similar videos |
| CVD3 | I would not praise videos that are pretty good in content but not practical |
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| Privacy awareness (PA) | PA1 | It will arouse my concern that the short video platform requires me to provide basic information, such as gender and age |
| PA2 | t will arouse my concern that the short video platform requires me to provide my physical information (e.g., positioning) |
| PA3 | When the short video platform asks me for a bank account, it alerts me |
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| Internet privacy consciousness (IPC) | IPC1 | I seldom use the function of recording my location when posting short videos |
| IPC2 | It will improve my probability of being cheated by providing personal information to the short video platform |
| IPC3 | I rarely provide device information to the platform when enjoying short videos, such as my mobile phone brand or performance information |
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| Negative interactions (NI) | NI1 | When enjoying short videos, I rarely praise them |
| NI2 | I set my “likes list” to be invisible to some friends or visible only to myself |
| NI3 | I have had the experience of praising a video and then canceling it |
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