Directedness and persistence in audio-visual interface for emergent users

"Emergent users" in the developing regions can interact better with a visually augmented audio interface (AV, the audio-visual) than an audio interface (A) like IVRs and a graphic user interface (G) on two grounds. First, audio prompts users to meet goals and thereby brings directedness to the interface. Second, visuals bring persistence by presenting options on the screen in parallel. To illustrate, 36 users performed information and transaction tasks on prototyped AV, A and G banking applications. Results: With AV, users exhibited better task completion than G and A. Though they were not as fast as G but they took less time than A. They rated AV higher on SUS scale than A, G.

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