Capabilities of Media Richness Scale 媒介丰富能力量表

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简介

随着移动技术(mobile technologies)的飞速发展,移动学习(mobile learning)已成为教育新趋势,了解如何更有效地利用通信技术来改善移动学习是非常重要的。Lan等(2010)基于媒介丰富度理论(media richness theory),确定了短信、电子邮件和RSS媒介丰富性评估的四个因素:及时性(timeliness),丰富性(richness),准确性(accuracy)和适应性(adaptability)。

信度与效度

Lan等(2010)通过实验来进行研究,总共有52名学生参与实验,实验完成后,所有参与者必须填写问卷,问卷的内容与媒介丰富的能力(Capabilities of Media Richness)有关,并附在附录中。每个项目都以五点Likert量表进行评估(1=非常不同意,5=非常同意)。然后,采用重复测量单因素方差分析来解释本实验中RSS,Email和SMS之间的差异。自主变量是在提出的学习环境中的信息传递方式的媒体选择,包括短信,电子邮件和RSS。该实验的因变量与媒介丰富性的能力有关,包括内容及时性,内容丰富性,内容准确性和内容适应性。研究使用四个13项目量表作为媒介丰富度的度量,包括基于媒介丰富度理论的内容及时性,内容丰富性,内容准确性和内容适应性,每个维度的Cronbach’s α在0.86~0.92之间,总可靠性为0.753。使用具有最大方差旋转的主成分方法检查构造有效性,所有项目的因子加载超过0.79,表明个别项目也具有判别效度。

量表

请您根据自己的实际感受和体会,用下面13项描述对您的感受进行评价和判断,并在横线上填上您认为最恰当的数字。

评价和判断的标准如下:1 非常不同意  2  不同意  3  不太确定  4 同意  5  非常同意
 
1.When instructor posts a class announcement,I can receive the message immediately.
2.When peer replies a discussion topic, I can receive the replied message automatically.
3.I can regularly acquire the reports of learning status from the learning system.
4.Overall, I think that the received messages are immediate.
5.I think that the received messages are only presented in text-based mode. (R)
6.The received message consists of text and image media types to describe a learning activity.
7.Overall, I find that the received messages contain various media types (e.g., text, image, sound, or animation).
8.I think that the received messages are clear.
9.I can easily understand what I received messages.
10.Overall, I think that the received messages are explicit and easy to understand.
11.I think that the received messages can be presented in different viewing modes to reveal the difference of specific subject.
12.I think that the received message can be demonstrated in different results based on same subject.
13.Overall, I think that the received messages can be adapted to other formats for supporting different presentation.

注释:R表示需要反向计分。

计分方法

媒介丰富能力量表量表总共13道题,
内容及时性分量表总共4道题,具体包括第1-4题;
内容丰富性分量表总共3道题,具体包括第5-7题;
内容准确性分量表总共3道题,具体包括第8-10题;
内容适应性分量表总共3道题,具体包括第11-13题。
可以计算量表的总分或平均分。

量表出处

Lan, Y.-F., & Sie, Y.-S. (2010). Using RSS to support mobile learning based on media richness theory. Computers and Education, 55, 723–732.

友情提醒

为方便学术研究,根据公开发表的学术成果整理而成,供学者在学术研究中使用, 商业使用请与原作者联系。为了尊重作者的劳动成果, 请根据量表出处规范引用,谢谢!