Universität zu Köln

Koestering, Lena, Leonhart, Rainer ORCID: 0000-0001-5945-1795, Stahl, Christoph, Weiller, Cornelius and Kaller, Christoph P. (2016). Planning Decrements in Healthy Aging: Mediation Effects of Fluid Reasoning and Working Memory Capacity. J. Gerontol. Ser. B-Psychol. Sci. Soc. Sci., 71 (2). S. 230 - 243. CARY: OXFORD UNIV PRESS INC. ISSN 1758-5368

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Abstract

Objectives: Although age-related differences in planning ability are well known, their cognitive foundations remain a matter of contention. To elucidate the specific processes underlying planning decrements in older age, the relative contributions of fluid reasoning, working memory (WM) capacity, and processing speed to accuracy on the Tower of London (TOL) planning task were investigated. Method: Mediation analyses were used to relate overall and search depth-related TOL accuracy from older (N = 106; 60-89 years) and younger adults (N = 69; 18-54 years) to age and measures of fluid reasoning, WM capacity, and speed. Results: For overall planning, fluid abilities mediated the effects of age, WM capacity, and speed in older adults. By contrast, fluid abilities and WM capacity mediated each other in younger adults. For planning accuracy under low demands on the depth of search, WM capacity was specifically important in older age, whereas younger adults recruited both WM capacity and fluid reasoning. Under high search-depth-demands, fluid abilities underlay the cognitive operations critical for resolving move interdependencies in both age groups. Discussion: Fluid abilities and WM capacity undergo significant changes from younger to older age in their unique contribution to planning, which might represent a mechanism whereby planning decrements in older age are brought about.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Koestering, Lena UNSPECIFIED UNSPECIFIED UNSPECIFIED Leonhart, Rainer UNSPECIFIED orcid.org/0000-0001-5945-1795 UNSPECIFIED Stahl, Christoph UNSPECIFIED UNSPECIFIED UNSPECIFIED Weiller, Cornelius UNSPECIFIED UNSPECIFIED UNSPECIFIED Kaller, Christoph P. UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-281911
DOI:	10.1093/geronb/gbu107
Journal or Publication Title:	J. Gerontol. Ser. B-Psychol. Sci. Soc. Sci.
Volume:	71
Number:	2
Page Range:	S. 230 - 243
Date:	2016
Publisher:	OXFORD UNIV PRESS INC
Place of Publication:	CARY
ISSN:	1758-5368
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SHORT-TERM-MEMORY; AGE-DIFFERENCES; OLDER-ADULTS; RELATIONAL INTEGRATION; EXECUTIVE FUNCTIONS; LONDON TASK; TOWER; INTELLIGENCE; PERFORMANCE; ABILITIES Multiple languages Geriatrics & Gerontology; Gerontology; Psychology; Psychology, Multidisciplinary Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/28191