Cognitive aging on latent constructs for visual processing capacity: a novel structural equation modeling framework with causal assumptions based on a theory of visual attention
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Cognitive aging on latent constructs for visual processing capacity : a novel structural equation modeling framework with causal assumptions based on a theory of visual attention. / Nielsen, Simon; Wilms, Inge Linda.
I: Frontiers in Psychology, Bind 5, 1596, 2015, s. 1-13.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Cognitive aging on latent constructs for visual processing capacity
T2 - a novel structural equation modeling framework with causal assumptions based on a theory of visual attention
AU - Nielsen, Simon
AU - Wilms, Inge Linda
PY - 2015
Y1 - 2015
N2 - We examined the effects of normal ageing on visual cognition in a sample of 112 healthy adults aged 60-75. A testbattery was designed to capture high-level measures of visual working memory and low-level measures of visuospatial attention and memory. To answer questions of how cognitive ageing affects specific aspects of visual processing capacity, we used confirmatory factor analyses in Structural Equation Modelling (SEM; Model 2), informed by functional structures that were modelled with path analyses in SEM (Model 1). The results show that ageing effects were selective to measures of visual processing speed compared to visual short-term memory (VSTM) capacity (Model 2). These results are consistent with some studies reporting selective ageing effects on processing speed, and inconsistent with other studies reporting ageing effects on both processing speed and VSTM capacity. In the discussion we argue that this discrepancy may be mediated by differences in age ranges, and variables of demography. The study demonstrates that SEM is a sensitive method to detect cognitive ageing effects even within a narrow age-range, and a useful approach to structure the relationships between measured variables, and the cognitive functional foundation they supposedly represent.
AB - We examined the effects of normal ageing on visual cognition in a sample of 112 healthy adults aged 60-75. A testbattery was designed to capture high-level measures of visual working memory and low-level measures of visuospatial attention and memory. To answer questions of how cognitive ageing affects specific aspects of visual processing capacity, we used confirmatory factor analyses in Structural Equation Modelling (SEM; Model 2), informed by functional structures that were modelled with path analyses in SEM (Model 1). The results show that ageing effects were selective to measures of visual processing speed compared to visual short-term memory (VSTM) capacity (Model 2). These results are consistent with some studies reporting selective ageing effects on processing speed, and inconsistent with other studies reporting ageing effects on both processing speed and VSTM capacity. In the discussion we argue that this discrepancy may be mediated by differences in age ranges, and variables of demography. The study demonstrates that SEM is a sensitive method to detect cognitive ageing effects even within a narrow age-range, and a useful approach to structure the relationships between measured variables, and the cognitive functional foundation they supposedly represent.
KW - Faculty of Social Sciences
KW - cognitive aging
KW - visual perception
KW - cognitive assessment
KW - Structures Equation Modelling
KW - TVA
KW - visual attention
KW - visual memory
U2 - 10.3389/fpsyg.2014.01596
DO - 10.3389/fpsyg.2014.01596
M3 - Journal article
VL - 5
SP - 1
EP - 13
JO - Frontiers in Psychology
JF - Frontiers in Psychology
SN - 1664-1078
M1 - 1596
ER -
ID: 123947638