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Theoretical Importance of Contingency in Human-Computer Interaction: Effects of Message Interactivity on User Engagement

机译：人机交互中权变的理论重要性：消息交互对用户参与的影响

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A critical determinant of message interactivity is the presence of contingency, that is, the messages we receive are contingent upon the messages we send, leading to a threaded loop of interdependent messages. While this conversational ideal is easily achieved in face-to-face and computer-mediated communications (CMC), imbuing contingency in human-computer interaction (HCI) is a challenge. We propose two interface featuresinteraction history and synchronous chatfor increasing perceptions of contingency, and therefore user engagement. We test it with a five-condition, between-participants experiment (N = 110) on a movie search site. Data suggest that interaction history can indeed heighten perceptions of contingency and dialogue, but is perceived as less interactive than chatting. However, the chat function does not appreciably increase perceived contingency or user engagement, both of which are shown to mediate the effects of message interactivity on attitudes toward the site. Theoretical implications for interactivity research and practical implications for interaction design are discussed.
机译：消息交互性的一个关键决定因素是偶然性的存在，也就是说，我们接收到的消息取决于我们发送的消息，从而导致相互依赖消息的线程化循环。尽管在面对面和计算机介导的通信（CMC）中很容易实现这种对话理想，但在人机交互（HCI）中引入偶然性是一个挑战。我们提出了两个界面功能：交互历史记录和同步聊天，以增加对意外事件的认识，从而增加用户的参与度。我们在电影搜索网站上进行了五项条件，参与者之间的实验（N = 110）进行了测试。数据表明，互动历史确实可以增强对偶然性和对话的理解，但互动性不如聊天。但是，聊天功能不会明显增加感知的偶然性或用户参与度，这两者都显示出可以调解消息交互性对站点态度的影响。讨论了对交互性研究的理论意义和对交互设计的实际意义。

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