Cognitive Functioning among Older Adults in Japan and Other Selected Asian Countries: In Search of a Better Way to Remeasure Population Aging

Japan is the oldest society in the world. It has the highest proportion of the population aged 65 and over, a demographic indicator that has been used by demographers for more than a century. One of the main objectives of this study is to apply a new indicator—the cognition-adjusted dependency ratio...

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Main Authors: NAOHIRO OGAWA, TAIYO FUKAI, NORMA MANSOR, NURUL DIYANA KAMARULZAMAN
Format: Article
Language:English
Published: World Scientific Publishing 2022-03-01
Series:Asian Development Review
Subjects:
Online Access:https://www.worldscientific.com/doi/10.1142/S0116110522500068
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author NAOHIRO OGAWA
TAIYO FUKAI
NORMA MANSOR
NURUL DIYANA KAMARULZAMAN
author_facet NAOHIRO OGAWA
TAIYO FUKAI
NORMA MANSOR
NURUL DIYANA KAMARULZAMAN
author_sort NAOHIRO OGAWA
collection DOAJ
description Japan is the oldest society in the world. It has the highest proportion of the population aged 65 and over, a demographic indicator that has been used by demographers for more than a century. One of the main objectives of this study is to apply a new indicator—the cognition-adjusted dependency ratio (CADR)—to remeasure the level of population aging from an innovative point of view. To compute this new index, we apply the mean age-group-specific immediate recall scores for Japan and four other Asian countries, and we compare the results with those derived from the United States and various developed nations in Europe. Our analysis shows that Japan’s pattern and level of age-related decline in cognitive functioning are highly comparable to those of many other developed nations, particularly in Continental Europe. Among the other Asian countries, Malaysia shows a pattern of change similar to countries in Southern Europe, although Malaysia has slightly lower scores than Southern Europe in all age groups. More importantly, these comparative results based on CADR are astonishingly different from the corresponding results obtained from conventional old-age dependency ratios. The Japanese case is the most salient example.
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spelling doaj.art-6e67e3ebbb754ce0bcc18cdd65a697282023-05-12T00:59:14ZengWorld Scientific PublishingAsian Development Review0116-11051996-72412022-03-0139019113010.1142/S0116110522500068Cognitive Functioning among Older Adults in Japan and Other Selected Asian Countries: In Search of a Better Way to Remeasure Population AgingNAOHIRO OGAWA0TAIYO FUKAI1NORMA MANSOR2NURUL DIYANA KAMARULZAMAN3Asian Development Bank Institute (ADBI), JapanGraduate School of Economics, The University of Tokyo, JapanSocial Wellbeing Research Centre, Faculty of Economics & Administration, University of Malaya, MalaysiaSocial Wellbeing Research Centre, Faculty of Economics & Administration, University of Malaya, MalaysiaJapan is the oldest society in the world. It has the highest proportion of the population aged 65 and over, a demographic indicator that has been used by demographers for more than a century. One of the main objectives of this study is to apply a new indicator—the cognition-adjusted dependency ratio (CADR)—to remeasure the level of population aging from an innovative point of view. To compute this new index, we apply the mean age-group-specific immediate recall scores for Japan and four other Asian countries, and we compare the results with those derived from the United States and various developed nations in Europe. Our analysis shows that Japan’s pattern and level of age-related decline in cognitive functioning are highly comparable to those of many other developed nations, particularly in Continental Europe. Among the other Asian countries, Malaysia shows a pattern of change similar to countries in Southern Europe, although Malaysia has slightly lower scores than Southern Europe in all age groups. More importantly, these comparative results based on CADR are astonishingly different from the corresponding results obtained from conventional old-age dependency ratios. The Japanese case is the most salient example.https://www.worldscientific.com/doi/10.1142/S0116110522500068cognition-adjusted dependency ratiocognitive functioningimmediate word recallpopulation aging
spellingShingle NAOHIRO OGAWA
TAIYO FUKAI
NORMA MANSOR
NURUL DIYANA KAMARULZAMAN
Cognitive Functioning among Older Adults in Japan and Other Selected Asian Countries: In Search of a Better Way to Remeasure Population Aging
Asian Development Review
cognition-adjusted dependency ratio
cognitive functioning
immediate word recall
population aging
title Cognitive Functioning among Older Adults in Japan and Other Selected Asian Countries: In Search of a Better Way to Remeasure Population Aging
title_full Cognitive Functioning among Older Adults in Japan and Other Selected Asian Countries: In Search of a Better Way to Remeasure Population Aging
title_fullStr Cognitive Functioning among Older Adults in Japan and Other Selected Asian Countries: In Search of a Better Way to Remeasure Population Aging
title_full_unstemmed Cognitive Functioning among Older Adults in Japan and Other Selected Asian Countries: In Search of a Better Way to Remeasure Population Aging
title_short Cognitive Functioning among Older Adults in Japan and Other Selected Asian Countries: In Search of a Better Way to Remeasure Population Aging
title_sort cognitive functioning among older adults in japan and other selected asian countries in search of a better way to remeasure population aging
topic cognition-adjusted dependency ratio
cognitive functioning
immediate word recall
population aging
url https://www.worldscientific.com/doi/10.1142/S0116110522500068
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