Joseph S. Valacich

Media, tasks, and communication processes: a theory of media synchronicity

This paper expands, refines, and explicates media synchronicity theory, originally proposed in a conference proceeding in 1999 (Dennis and Valacich 1999). Media synchronicity theory (MST) focuses on the ability of media to support synchronicity, a shared pattern of coordinated behavior among individuals as they work together. We expand on the original propositions of MST to argue that communication is composed of two primary processes: conveyance and convergence. The familiarity of individuals with the tasks they are performing and with their coworkers will also affect the relative amounts of these two processes. Media synchronicity theory proposes that for conveyance processes, use of media supporting lower synchronicity should result in better communication performance. For convergence processes, use of media supporting higher synchronicity should result in better communication performance. We identify five capabilities of media (symbol sets, parallelism, transmission velocity, rehearsability, and reprocessability) that influence the development of synchronicity and thus the successful performance of conveyance and convergence communication processes. The successful completion of most tasks involving more than one individual requires both conveyance and convergence processes, thus communication performance will be improved when individuals use a variety of media to perform a task, rather than just one medium.

Rethinking media richness: towards a theory of media synchronicity

The paper describes a new theory called a theory of media synchronicity which proposes that a set of five media capabilities are important to group work, and that all tasks are composed of two fundamental communication processes (conveyance and convergence). Communication effectiveness is influenced by matching the media capabilities to the needs of the fundamental communication processes, not aggregate collections of these processes (i.e., tasks) as proposed by media richness theory. The theory also proposes that the relationships between communication processes and media capabilities will vary between established and newly formed groups, and will change over time.

Electronic Brainstorming And Group Size

Two concurrent experiments were conducted with groups of varying size; there were 2-, 4-, and 6-person groups in one and 6- and 12-person groups in the other. We compared the number and quality of ...

Using IT to reengineer business education: an exploratory investigation of collaborative telelearning

This longitudinal field study (three work sessions plus an initial training session), investigates the efficacy of a new technology -- desktop videoconferencing (DVC) -- in support of collaborative telelearning (i.e., collaborative learning among non-proximate team members). Two types of collaborative telelearning environments are considered. One involves local groups (i.e., students on the same campus), and the other involves non-proximate distant groups (i.e., students on two separate campuses). The collaborative telelearning environments are compared to each other and to a traditional face-to-face collaborative learning environment.The study found that the three environments are equally effective in terms of student knowledge acquisition; however, higher critical-thinking skills were found in the distant DVC environment. The subjects in the three learning environments were equally satisfied with their learning process and outcomes. At the conclusion of the longitudinal assessment, the distant students using DVC were more committed and attracted to their groups compared to local students who worked face-to-face or through DVC.

Uncovering the intellectual core of the information systems discipline

What is the intellectual core of the information systems discipline? This study uses latent semantic analysis to examine a large body of published IS research in order to address this question. Specifically, the abstracts of all research papers over the time period from 1985 through 2006 published in three top IS research journals-MIS Quarterly, Information Systems Research, and Journal of Management Information Systems-were analyzed. This analysis identified five core research areas: (1) information technology and organizations; (2) IS development; (3) IT and individuals; (4) IT and markets; and (5) IT and groups. Over the time frame of our analysis, these core topics have remained quite stable. However, the specific research themes within each core area have evolved significantly, reflecting research that has focused less on technology development and more on the social context in which information technologies are designed and used. As such, this analysis demonstrates that the information systems academic discipline has maintained a relatively stable research identity that focuses on how IT systems are developed and how individuals, groups, organizations, and markets interact with IT.

The Effects of Interruptions, Task Complexity, and Information Presentation on Computer‐Supported Decision‐Making Performance

Interruptions are a frequent occurrence in the work life of most decision makers. This paper investigated the influence of interruptions on different types of decision-making tasks and the ability of information presentation formats, an aspect of information systems design, to alleviate them. Results from the experimental study indicate that interruptions facilitate performance on simple tasks, while inhibiting performance on more complex tasks. Interruptions also influenced the relationship between information presentation format and the type of task performed: spatial presentation formats were able to mitigate the effects of interruptions while symbolic formats were not. The paper presents a broad conceptualization of interruptions and interprets the ramifications of the experimental findings within this conceptualization to develop a program for future research.

Group Size and Anonymity Effects on Computer-Mediated Idea Generation

Some for,ns of computer-mediated communication enable groups to engage simultaneously in multiple electronic conversations. One interesting aspect of this technology, in addition to this parallelism, is that the channel is configurable to support forms of group interaction that were previously difficult, if not impossible. This article reports a laboratory experiment that examined the effects of group size (3 and 9 members) and group member anonymity on the performance of groups using a computer-mediated idea-generation system. Although group members in all conditions made, on average, the same number of comments, larger groups generated significantly more ideas (and higher-quality ideas as rated by judges) than did smaller groups. Anzonymity had no effect on ideational performance. Members of small-idenitified groups made the fewest critical remarks, were the most satisfied, and rated themselves more effective than group members from the other experimental conditions.

The Influence of Website Characteristics on a Consumer's Urge to Buy Impulsively

With the proliferation of e-commerce, there is growing evidence that online impulse buying is occurring, yet relatively few researchers have studied this phenomenon. This paper reports on two studies that examine how variations in a website influence online impulse buying. The results reveal some relevant insights about this phenomenon. Specifically, although many participants had the urge to buy impulsively, regardless of website quality, this behaviors likelihood and magnitude was directly influenced by varying the quality of task-relevant and mood-relevant cues. Task-relevant cues include characteristics, such as navigability, that help in the attainment of the online consumers shopping goal. Conversely, mood-relevant cues refer to the characteristics, such as visual appeal, that affect the degree to which a user enjoys browsing a website but that do not directly support a particular shopping goal. The implications of the results for both future research and the design of human-computer interfaces are discussed.

Facilitation, GSS, and Training as Sources of Process Restrictiveness and Guidance for Structured Group Decision Making: An Empirical Assessment

Structured decision techniques have been a mainstay of prescriptive decision theory for decades. Group Support Systems GSSs automate many of the features found in decision techniques, yet groups often choose to ignore both the technique and the technology in favor of more familiar decision processes. This research empirically tests propositions and hypotheses for a specific instantiation of Adaptive Structuration Theory. A controlled laboratory experiment tests the ability of three appropriation mediators e.g., facilitation, GSS configuration, and training to directively affect group decision making through guidance and restrictiveness. The experiment used a hidden-profile task and structured decision technique which directed group members to reach a decision by identifying the problem, choosing criteria, and selecting a solution. The results supported the proposition that appropriation mediators can increase the faithful use of structured decision techniques and that faithful use can improve decision quality.

Communication Concurrency and the New Media A New Dimension for Media Richness

An experiment investigated the ideational performance of groups using verbal or computer-mediated communication while face-to-face or distributed from one another. Groups using computer mediation outperformed groups using verbal communication. The proximity manipulation had no significant effects on performance. It is proposed that the difference between the new media (e.g., computer-mediated) and more traditional media (e.g., verbal) relates to the mediums concurrency—defined as the number of distinct communication episodes a channel can effectively support. Computer mediation can support an unlimited number of parallel and distinct communication episodes; traditional media support serial communication and therefore have a fundamentally different concurrency.