Table 6.

Study 1: Reduced scale items after CFA.

Factors	Scale items
Effectiveness	This message will cause changes in my behavior. This message causes me to make some changes in my behavior. After viewing this message, I will make changes in my attitude.
Quality	This message is accurate. This message is trustworthy. I believe this message is true.
Capability	This message has the potential to change user behavior. This message has the potential to influence user behavior. This message has the potential to inspire users.