Final answer:
According to research on persuasive messages, a message can be more effective if it is recent and comes from someone with authority. However, personal and face-to-face communication also plays a significant role in persuasion.
Step-by-step explanation:
According to research on persuasive messages, there are several factors that can make a message more effective. One of these factors is the timing of the message. Messages that are more recent tend to have a greater impact on the audience. Another factor is the source of the message. Messages from someone with authority or expertise on the topic are usually more persuasive. However, personal and face-to-face communication is also considered to be highly effective in persuading others. Overall, the effectiveness of a persuasive message depends on various factors such as subtlety, timing, credibility, and the mode of communication.