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01.11.2010 | Long Paper

Making it easier for older people to talk to smart homes: the effect of early help prompts

verfasst von: K. Maria Wolters, Klaus-Peter Engelbrecht, Florian Gödde, Sebastian Möller, Anja Naumann, Robert Schleicher

Erschienen in: Universal Access in the Information Society | Ausgabe 4/2010

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Abstract

It is well known that help prompts shape how users talk to spoken dialogue systems. This study investigated the effect of help prompt placement on older users’ interaction with a smart home interface. In the dynamic help condition, help was only given in response to system errors; in the inherent help condition, it was also given at the start of each task. Fifteen older and sixteen younger users interacted with a smart home system using two different scenarios. Each scenario consisted of several tasks. The linguistic style users employed to communicate with the system (interaction style) was measured using the ratio of commands to the overall utterance length (keyword ratio) and the percentage of content words in the user’s utterance that could be understood by the system (shared vocabulary). While the timing of help prompts did not affect the interaction style of younger users, it was early task-specific help supported older users in adapting their interaction style to the system’s capabilities. Well-placed help prompts can significantly increase the usability of spoken dialogue systems for older people.

Vorheriger Artikel Accessibility of audio and tactile interfaces for young blind people performing everyday tasks

Nächster Artikel User-centered design in universal design resources?

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Four of the missing participants were not tested, two refused to be tested.

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For a definition of “user turns”, see Sect. 3.7.

In the following text, significance values of 0.001 or better are given as 0.00.

Quantile/quantile plots compare the observed distribution of variable values with the distribution that would be expected if the variable were normally distributed.

For scenario-level correlations, we used the average Keyword Ratio and Shared Vocabulary for each speaker and scenario.

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Titel: Making it easier for older people to talk to smart homes: the effect of early help prompts
verfasst von: K. Maria Wolters
Klaus-Peter Engelbrecht
Florian Gödde
Sebastian Möller
Anja Naumann
Robert Schleicher
Publikationsdatum: 01.11.2010
Verlag: Springer-Verlag
Erschienen in: Universal Access in the Information Society / Ausgabe 4/2010
Print ISSN: 1615-5289
Elektronische ISSN: 1615-5297
DOI: https://doi.org/10.1007/s10209-009-0184-x

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