A Conversational Robot for Cognitively Impaired Older People Who Live Alone: An Exploratory Feasibility Study

Nagata, Yuma; Satake, Yuto; Yamazaki, Ryuji; Nishio, Shuichi; Suzuki, Maki; Kanemoto, Hideki; Yamakawa, Miyae; Figueroa, David; Maalouly, Elie; Ishiguro, Hiroshi; Ikeda, Manabu

doi:https://doi.org/10.1111/psyg.70076

A Conversational Robot for Cognitively Impaired Older People Who Live Alone: An Exploratory Feasibility Study

Nagata, Yuma; Satake, Yuto; Yamazaki, Ryuji et al.

Psychogeriatrics, 2025, 25(5), e70076

アクセス数:23件（2025-12-07 09:50 集計）

固定URL: https://hdl.handle.net/11094/102946

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タイトル	A Conversational Robot for Cognitively Impaired Older People Who Live Alone: An Exploratory Feasibility Study
著者	NRID 1000090832824 1000090832824 researchmap permalink yumanagata yumanagata Scopus Author ID 56670777100 56670777100 著者名 Nagata, Yuma
	ORCID 0000-0002-9350-3162 0000-0002-9350-3162 researchmap permalink y.satake y.satake Scopus Author ID 57218214023 57218214023 著者名 Satake, Yuto
	NRID 1000010623746 1000010623746 著者名 Yamazaki, Ryuji
	NRID 1000080418532 1000080418532 researchmap permalink nishio.shuichi nishio.shuichi Scopus Author ID 23985862800 23985862800 著者名 Nishio, Shuichi
	NRID 1000080422145 1000080422145 ORCID 0000-0003-4777-4110 0000-0003-4777-4110 researchmap permalink maki_suzuki maki_suzuki Scopus Author ID 55757304900 55757304900 著者名 Suzuki, Maki
	NRID 1000020838932 1000020838932 ORCID 0000-0003-3662-1469 0000-0003-3662-1469 researchmap permalink hkane_gerpsy hkane_gerpsy Scopus Author ID 56521238700 56521238700 著者名 Kanemoto, Hideki
	NRID 1000080403012 1000080403012 ORCID 0000-0002-2399-8366 0000-0002-2399-8366 researchmap permalink miyatabu miyatabu Scopus Author ID 16246912100 16246912100 著者名 Yamakawa, Miyae
	著者名 Figueroa, David
	著者名 Maalouly, Elie
	NRID 1000010232282 1000010232282 ORCID 0000-0002-0805-7648 0000-0002-0805-7648 researchmap permalink read0013747 read0013747 Scopus Author ID 26643316500 26643316500 著者名 Ishiguro, Hiroshi
	NRID 1000060284395 1000060284395 researchmap permalink manabu_ikeda manabu_ikeda Scopus Author ID 7404692889 7404692889 著者名 Ikeda, Manabu
キーワード等	dementia
	depression
	loneliness
	proof of concept
	robot
	usability
内容	Nagata Y., Satake Y., Yamazaki R., et al. A Conversational Robot for Cognitively Impaired Older People Who Live Alone: An Exploratory Feasibility Study. Psychogeriatrics 25, e70076 (2025); https://doi.org/10.1111/psyg.70076.
抄録	Background: Social isolation and loneliness are significant risk factors for poor mental health in older adults, particularly those living alone with cognitive impairment. Socially assistive robots (SARs) offer a promising approach to enhance social connection and emotional well-being in this population. This study aimed to examine the feasibility, acceptability and potential psychosocial impact of a 16-week, home-based use of a conversational SAR in cognitively impaired older adults living alone. Methods: This was a single-arm, exploratory feasibility study involving home installation of a humanoid conversational robot (RoBoHoN) for 16 weeks. Usability was assessed with the System Usability Scale (SUS). Psychosocial outcomes, including loneliness (UCLA-LS3) and depressive symptoms (GDS-15), were measured pre- and post-intervention. Semi-structured interviews were conducted and analysed using hybrid content analysis to explore user experiences. Results: A total of 11 participants were enrolled, including individuals with mild cognitive impairment, mild dementia and late-onset psychosis; nine completed the study. The mean age was 81.9 years, with an age range of 71–89 years. The mean SUS score was 81.7, indicating high usability even among cognitively impaired users. Small-to-moderate effect sizes were observed for reductions in loneliness and depressive symptoms (UCLA-LS3: r = 0.40; GDS-15: r = 0.64), although not statistically significant. Qualitative findings highlighted perceived companionship and increased opportunities to speak, while also noting limitations such as poor conversational depth, delayed responses and technical issues like battery depletion or sensitivity to background noise. Conclusions: The 16-week home-based use of a conversational robot was feasible and well accepted by older adults with cognitive impairment living alone. Although preliminary, findings suggest potential psychosocial benefits of SARs in this population. These results support the rationale for conducting a controlled trial targeting loneliness and depression in cognitively impaired, socially isolated older adults.
出版者	John Wiley and Sons Inc
収録物名	Psychogeriatrics
巻(号)	25(5)
ページ	e70076
刊行年月	2025-07-26
言語	英語
ハンドルURL	https://hdl.handle.net/11094/102946
PISSN	13463500
eISSN	14798301
関連情報 (isIdenticalTo)	DOI (出版社版) https://doi.org/10.1111/psyg.70076
アクセス権	open access
権利情報	This article is licensed under a Creative Commons Attribution 4.0 International License.
出版タイプ	Version of Record
カテゴリ	学術雑誌論文 Journal Article

資源タイプ	学術雑誌論文
ローカル資源タイプ	学術雑誌論文
DCMI資源タイプ	text
DCTERMS.bibliographicCitation	Psychogeriatrics. 2025, 25(5), p. e70076
DC.title	A Conversational Robot for Cognitively Impaired Older People Who Live Alone: An Exploratory Feasibility Study
DC.creator	Nagata, Yuma
	Satake, Yuto
	Yamazaki, Ryuji
	Nishio, Shuichi
	Suzuki, Maki
	Kanemoto, Hideki
	Yamakawa, Miyae
	Figueroa, David
	Maalouly, Elie
	Ishiguro, Hiroshi
	Ikeda, Manabu
DC.publisher	John Wiley and Sons Inc
DC.language' scheme='DCTERMS.RFC1766	英語
DC.type' scheme='DCTERMS.DCMIType	text
DCTERMS.issued' scheme='DCTERMS.W3CDTF	2025-07-26
DC.identifier	https://doi.org/10.1111/psyg.70076
DC.subject	dementia
	depression
	loneliness
	proof of concept
	robot
	usability
DC.description	Nagata Y., Satake Y., Yamazaki R., et al. A Conversational Robot for Cognitively Impaired Older People Who Live Alone: An Exploratory Feasibility Study. Psychogeriatrics 25, e70076 (2025); https://doi.org/10.1111/psyg.70076.
DCTERMS.abstract	Background: Social isolation and loneliness are significant risk factors for poor mental health in older adults, particularly those living alone with cognitive impairment. Socially assistive robots (SARs) offer a promising approach to enhance social connection and emotional well-being in this population. This study aimed to examine the feasibility, acceptability and potential psychosocial impact of a 16-week, home-based use of a conversational SAR in cognitively impaired older adults living alone. Methods: This was a single-arm, exploratory feasibility study involving home installation of a humanoid conversational robot (RoBoHoN) for 16 weeks. Usability was assessed with the System Usability Scale (SUS). Psychosocial outcomes, including loneliness (UCLA-LS3) and depressive symptoms (GDS-15), were measured pre- and post-intervention. Semi-structured interviews were conducted and analysed using hybrid content analysis to explore user experiences. Results: A total of 11 participants were enrolled, including individuals with mild cognitive impairment, mild dementia and late-onset psychosis; nine completed the study. The mean age was 81.9 years, with an age range of 71–89 years. The mean SUS score was 81.7, indicating high usability even among cognitively impaired users. Small-to-moderate effect sizes were observed for reductions in loneliness and depressive symptoms (UCLA-LS3: r = 0.40; GDS-15: r = 0.64), although not statistically significant. Qualitative findings highlighted perceived companionship and increased opportunities to speak, while also noting limitations such as poor conversational depth, delayed responses and technical issues like battery depletion or sensitivity to background noise. Conclusions: The 16-week home-based use of a conversational robot was feasible and well accepted by older adults with cognitive impairment living alone. Although preliminary, findings suggest potential psychosocial benefits of SARs in this population. These results support the rationale for conducting a controlled trial targeting loneliness and depression in cognitively impaired, socially isolated older adults.
DC.rights	This article is licensed under a Creative Commons Attribution 4.0 International License.
DC.format	102946
citation_title	A Conversational Robot for Cognitively Impaired Older People Who Live Alone: An Exploratory Feasibility Study
citation_author	Nagata, Yuma
	Satake, Yuto
	Yamazaki, Ryuji
	Nishio, Shuichi
	Suzuki, Maki
	Kanemoto, Hideki
	Yamakawa, Miyae
	Figueroa, David
	Maalouly, Elie
	Ishiguro, Hiroshi
	Ikeda, Manabu
citation_publisher	John Wiley and Sons Inc
citation_language	英語
citation_date	2025-07-26
citation_journal_title	Psychogeriatrics
citation_volume	25
citation_issue	5
citation_firstpage	e70076
citation_doi	https://doi.org/10.1111/psyg.70076
citation_public_url	https://hdl.handle.net/11094/102946

A Conversational Robot for Cognitively Impaired Older People Who Live Alone: An Exploratory Feasibility Study

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