Title:	EFFICIENCY OF EXPERIENCED USE OF MULTIMODAL
Author(s):	Mohammad M. Alsuraihi , Dimitris I. Rigas
ISBN:	978-972-8924-39-3
Editors:	António Palma dos Reis, Katherine Blashki and Yingcai Xiao (series editors:Piet Kommers, Pedro Isaías and Nian-Shing Chen)
Year:	2007
Edition:	Single
Keywords:	interface-design, usability, efficiency, multimodal interaction, voice-instruction, speech.
Type:	Full Paper
First Page:	11
Last Page:	18
Language:	English
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Full Contents:	click to dowload
Paper Abstract:	This paper introduces an empirical multi-group study for investigating the experienced use of visual and multimodal interaction metaphors for designing interfaces. The study aimed at comparing the efficiency of multimodal interaction using voice-instruction and speech along with limited use of the mouse and the keyboard against the efficiency of using visual-only interaction metaphors for using interface-design environments. Efficiency of these interaction metaphors was compared in regard to task accomplishment time and frequency of error-occurrence. In order to carry out this comparative investigation, three experimental interface design toolkits (TVOID, OFVOID, and MMID) were built from scratch. TVOID and OFVOID interacted with the user visually only using typical and time-saving interaction metaphors. The third environment MMID added another modality through vocal and aural interaction. Then, these environments were tested independently by three groups of experienced users. Each groups consisted of 40 users. The results showed that the use of vocal commands and speech with limited use of the mouse for completing tasks was more efficient in terms of shortening task accomplishment time and reducing the number of errors than the use of the typical and timesaving visual-only interaction metaphors: graphical menus, toolbar, toolbox, properties-table, hot-keys, scrollable-tags, instant-menus, textual-help, and textual messages.
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