Automatic Assessment of Loneliness in Older Adults Using Speech Analysis on Responses to Daily Life Questions release_i2zi5vsvmrhnnjtayotqkhjh7a

by Yasunori Yamada, Kaoru Shinkawa, Miyuki Nemoto, Tetsuaki Arai

Published in Frontiers in Psychiatry by Frontiers Media SA.

2021   Volume 12, p712251

Abstract

Loneliness is a perceived state of social and emotional isolation that has been associated with a wide range of adverse health effects in older adults. Automatically assessing loneliness by passively monitoring daily behaviors could potentially contribute to early detection and intervention for mitigating loneliness. Speech data has been successfully used for inferring changes in emotional states and mental health conditions, but its association with loneliness in older adults remains unexplored. In this study, we developed a tablet-based application and collected speech responses of 57 older adults to daily life questions regarding, for example, one's feelings and future travel plans. From audio data of these speech responses, we automatically extracted speech features characterizing acoustic, prosodic, and linguistic aspects, and investigated their associations with self-rated scores of the UCLA Loneliness Scale. Consequently, we found that with increasing loneliness scores, speech responses tended to have less inflections, longer pauses, reduced second formant frequencies, reduced variances of the speech spectrum, more filler words, and fewer positive words. The cross-validation results showed that regression and binary-classification models using speech features could estimate loneliness scores with an <jats:italic>R</jats:italic><jats:sup>2</jats:sup> of 0.57 and detect individuals with high loneliness scores with 95.6% accuracy, respectively. Our study provides the first empirical results suggesting the possibility of using speech data that can be collected in everyday life for the automatic assessments of loneliness in older adults, which could help develop monitoring technologies for early detection and intervention for mitigating loneliness.
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https://www.frontiersin.org/articles/10.3389/fpsyt.2021.712251/full
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