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Effective Computer-mediated Communication Using Hypertext: Introducing Expanding Hypertext--Are They Adventurous?
Unformatted Document Text:  Effective Computer-mediated Communication Using Hypertext 11 explanation or example, integrating with prior knowledge and cross-linking to other related nodes of information (MacGregor, 1999). They did not access the nodes sequentially, but rather accessed items selectively. Britt, Rouet, and Perfetti (1996) also noticed that some students were able to prioritize the documents’ importance and study first those documents that they judged most important. MacGregor (1999) further analyzed the cognitive characteristics of these three types of users. The CCs tended to have more prior knowledge of content whereas the SS and VV had generally moderate levels of prior knowledge. Also, the CCs had higher levels of need for cognition and internal locus of control whereas the SS had lower levels of need for cognition and a lower sense of self-efficacy. Theory of Information Processing and Sensation-seeking One motivational characteristic of individuals that may impact how they process information in using hypertext is need for sensation (Bardo, Donohew, & Harrington, 1996; Zuckerman, 1994). Sensation-seeking is defined as a trait characterized by the need for varied, novel, and complex sensations and experience and the willingness to take physical and social risks for the sake of such experience (Zuckerman, 1979, p. 10). One of the four factors identified by Zuckerman (1971) was Thrill and Adventure Seeking (TAS), also known as adventurousness (Ferguson, Valenti, and Melwani, 1991), that is associated with self-reports of enjoyment of risk such as new and exciting experiences such as new and novel stimuli including new information (Zuckerman, 1990). Sensation seekers tend to exhibit a higher need for arousal than others. In this study, different text structures are suspected to stimulate individuals differently. Donohew, Palmgreen, and Duncan (1980) postulated an activation model of exposure to information. This reflects how an individual chooses certain information to process based on their cognitive and activation needs. Attention depends on an individual s need for

Authors: Lee, Moon.
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Effective Computer-mediated Communication Using Hypertext
11
explanation or example, integrating with prior knowledge and cross-linking to other related
nodes of information (MacGregor, 1999). They did not access the nodes sequentially, but
rather accessed items selectively. Britt, Rouet, and Perfetti (1996) also noticed that some
students were able to prioritize the documents’ importance and study first those documents
that they judged most important.
MacGregor (1999) further analyzed the cognitive characteristics of these three types
of users. The CCs tended to have more prior knowledge of content whereas the SS and VV
had generally moderate levels of prior knowledge. Also, the CCs had higher levels of need
for cognition and internal locus of control whereas the SS had lower levels of need for
cognition and a lower sense of self-efficacy.
Theory of Information Processing and Sensation-seeking
One motivational characteristic of individuals that may impact how they process
information in using hypertext is need for sensation (Bardo, Donohew, & Harrington, 1996;
Zuckerman, 1994). Sensation-seeking is defined as a trait characterized by the need for
varied, novel, and complex sensations and experience and the willingness to take physical
and social risks for the sake of such experience
(Zuckerman, 1979, p. 10). One of the four
factors identified by Zuckerman (1971) was Thrill and Adventure Seeking (TAS), also
known as adventurousness (Ferguson, Valenti, and Melwani, 1991), that is associated with
self-reports of enjoyment of risk such as new and exciting experiences such as new and novel
stimuli including new information (Zuckerman, 1990). Sensation seekers tend to exhibit a
higher need for arousal than others. In this study, different text structures are suspected to
stimulate individuals differently.
Donohew, Palmgreen, and Duncan (1980) postulated an activation model of exposure
to information. This reflects how an individual chooses certain information to process based
on their cognitive and activation needs. Attention depends on an individual
s need for


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