27550027c - Proceedings of the 40th Hawaii International...

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Fine-Tuning the Human-Computer Interface: Verbal versus Keyboard Input in an Idea Generation Context J. H. Jung Clayton Arlen Looney Joseph S. Valacich California State University at Fresno University of Montana Washington State University jjung@csufresno.edu clayton.looney@business.umt.edu jsv@wsu.edu Abstract Voice recognition technologies are rapidly evolving to help humans interact with computers more efficiently and effectively. Despite their potential advantages, their impact on system usability has not received sufficient empirical attention. To this end, this study applies voice recognition technologies in a setting where the speed and volume of human input is critical – small group idea generation. Rather than forcing group members to input ideas via keyboard, a novel idea generation technique is introduced whereby ideas are captured directly through verbalization. The results indicate that inputting ideas verbally enhances system usability, providing a more efficient and effective mechanism for generating ideas in a computer-mediated environment. Verbalizing ideas appears to help group members focus on analytical thinking and leverage others’ ideas, ultimately facilitating the creation of idea pools that are vastly superior in terms of quantity and quality. As expected, these effects are robust across nominal and small interacting groups. 1. Introduction Human-computer interaction (HCI) involves communication between two types of information processors – the human and the computer. Interacting with computers often necessitates a change from innate human-to-human communication toward more contrived human-computer dialogues. Since its inception, HCI research has primarily focused on usability [35], which refers to “the extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use” (Ref.[24], p. 34). Over the past two decades, achieving the objectives of efficiency and effectiveness has been the subject of much discussion. Davis and others [11] have suggested that the use of computing technologies is partially determined by usefulness and ease of use perceptions. The usefulness concept involves the idea that users will perform more effectively, whereas ease of use pertains to the notion that users can interact with the computer with minimal effort (i.e., efficiently). In addition, perceptions of usefulness are affected by ease of use, meaning that manipulating the level of effort required for humans to interact with the computer can enhance effectiveness. As technologies continue to rapidly evolve, computers can process and output large volumes of information at unprecedented speeds. The capabilities of humans, however, have remained constant. Consequently, the majority of empirical studies have
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27550027c - Proceedings of the 40th Hawaii International...

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