Differential age effects in semantic and episodic memory, part II

Slope and intercept analyses

Philip A. Allen, Martin John Sliwinski, Tanara Bowie

Research output: Contribution to journalArticle

29 Citations (Scopus)

Abstract

This study tested for dissociations between age-related slowing in peripheral and central processes across semantic and episodic memory tasks. We report the mixed-model analysis of variance (ANOVA) results using reaction time (RT), error, and data from four different experimental tasks and eight data sets (the four tasks involved either multiple sessions or different stimuli) conducted on the same 80 participants (40 younger and 40 older adults). An earlier paper (Allen, Sliwinski, Bowie, & Madden, in press) reported the factor analysis and structural equation modeling results of this study. We employed two semantic memory tasks (lexical decision and multiplication verification) using data from two different sessions (for a total of four semantic data sets), and two episodic memory tasks (hybrid visual search and memory search with digits and with words as stimuli). For RT analyses, we found Age × Task interactions for all four episodic memory data sets, but no Age × Task interactions for the four semantic memory data sets. Also, the intercept (assumed to index peripheral processes) and slope (assumed to index central processes) analyses demonstrated that older adults (relative to younger adults) showed both intercept and slope decrements for episodic memory tasks, but only intercept decrements for semantic memory tasks. These data are consistent with a theoretical framework in which there are age-related dissociations between peripheral and central processes across semantic and episodic memory.

Original languageEnglish (US)
Pages (from-to)111-142
Number of pages32
JournalExperimental Aging Research
Volume28
Issue number2
DOIs
StatePublished - Apr 13 2002

Fingerprint

Episodic Memory
Semantics
Reaction Time
Statistical Factor Analysis
Age Effects
Semantic Memory
Young Adult
Analysis of Variance
Datasets

All Science Journal Classification (ASJC) codes

  • Aging
  • Arts and Humanities (miscellaneous)
  • Psychology(all)
  • Geriatrics and Gerontology

Cite this

@article{36dea554295f4830b3fa62ac3beb5126,
title = "Differential age effects in semantic and episodic memory, part II: Slope and intercept analyses",
abstract = "This study tested for dissociations between age-related slowing in peripheral and central processes across semantic and episodic memory tasks. We report the mixed-model analysis of variance (ANOVA) results using reaction time (RT), error, and data from four different experimental tasks and eight data sets (the four tasks involved either multiple sessions or different stimuli) conducted on the same 80 participants (40 younger and 40 older adults). An earlier paper (Allen, Sliwinski, Bowie, & Madden, in press) reported the factor analysis and structural equation modeling results of this study. We employed two semantic memory tasks (lexical decision and multiplication verification) using data from two different sessions (for a total of four semantic data sets), and two episodic memory tasks (hybrid visual search and memory search with digits and with words as stimuli). For RT analyses, we found Age × Task interactions for all four episodic memory data sets, but no Age × Task interactions for the four semantic memory data sets. Also, the intercept (assumed to index peripheral processes) and slope (assumed to index central processes) analyses demonstrated that older adults (relative to younger adults) showed both intercept and slope decrements for episodic memory tasks, but only intercept decrements for semantic memory tasks. These data are consistent with a theoretical framework in which there are age-related dissociations between peripheral and central processes across semantic and episodic memory.",
author = "Allen, {Philip A.} and Sliwinski, {Martin John} and Tanara Bowie",
year = "2002",
month = "4",
day = "13",
doi = "10.1080/03610730252800157",
language = "English (US)",
volume = "28",
pages = "111--142",
journal = "Experimental Aging Research",
issn = "0361-073X",
publisher = "Taylor and Francis Ltd.",
number = "2",

}

Differential age effects in semantic and episodic memory, part II : Slope and intercept analyses. / Allen, Philip A.; Sliwinski, Martin John; Bowie, Tanara.

In: Experimental Aging Research, Vol. 28, No. 2, 13.04.2002, p. 111-142.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Differential age effects in semantic and episodic memory, part II

T2 - Slope and intercept analyses

AU - Allen, Philip A.

AU - Sliwinski, Martin John

AU - Bowie, Tanara

PY - 2002/4/13

Y1 - 2002/4/13

N2 - This study tested for dissociations between age-related slowing in peripheral and central processes across semantic and episodic memory tasks. We report the mixed-model analysis of variance (ANOVA) results using reaction time (RT), error, and data from four different experimental tasks and eight data sets (the four tasks involved either multiple sessions or different stimuli) conducted on the same 80 participants (40 younger and 40 older adults). An earlier paper (Allen, Sliwinski, Bowie, & Madden, in press) reported the factor analysis and structural equation modeling results of this study. We employed two semantic memory tasks (lexical decision and multiplication verification) using data from two different sessions (for a total of four semantic data sets), and two episodic memory tasks (hybrid visual search and memory search with digits and with words as stimuli). For RT analyses, we found Age × Task interactions for all four episodic memory data sets, but no Age × Task interactions for the four semantic memory data sets. Also, the intercept (assumed to index peripheral processes) and slope (assumed to index central processes) analyses demonstrated that older adults (relative to younger adults) showed both intercept and slope decrements for episodic memory tasks, but only intercept decrements for semantic memory tasks. These data are consistent with a theoretical framework in which there are age-related dissociations between peripheral and central processes across semantic and episodic memory.

AB - This study tested for dissociations between age-related slowing in peripheral and central processes across semantic and episodic memory tasks. We report the mixed-model analysis of variance (ANOVA) results using reaction time (RT), error, and data from four different experimental tasks and eight data sets (the four tasks involved either multiple sessions or different stimuli) conducted on the same 80 participants (40 younger and 40 older adults). An earlier paper (Allen, Sliwinski, Bowie, & Madden, in press) reported the factor analysis and structural equation modeling results of this study. We employed two semantic memory tasks (lexical decision and multiplication verification) using data from two different sessions (for a total of four semantic data sets), and two episodic memory tasks (hybrid visual search and memory search with digits and with words as stimuli). For RT analyses, we found Age × Task interactions for all four episodic memory data sets, but no Age × Task interactions for the four semantic memory data sets. Also, the intercept (assumed to index peripheral processes) and slope (assumed to index central processes) analyses demonstrated that older adults (relative to younger adults) showed both intercept and slope decrements for episodic memory tasks, but only intercept decrements for semantic memory tasks. These data are consistent with a theoretical framework in which there are age-related dissociations between peripheral and central processes across semantic and episodic memory.

UR - http://www.scopus.com/inward/record.url?scp=0036204988&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036204988&partnerID=8YFLogxK

U2 - 10.1080/03610730252800157

DO - 10.1080/03610730252800157

M3 - Article

VL - 28

SP - 111

EP - 142

JO - Experimental Aging Research

JF - Experimental Aging Research

SN - 0361-073X

IS - 2

ER -