Decline and fall: a biological, developmental, and psycholinguistic account of deliberative language processes and ageing

Trevor A. Harley, Lesley J. Jessiman, Siobhan B. G. MacAndrew

Research output: Contribution to journalArticle

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Abstract

Background: This paper reviews the role of deliberative processes in language: those language processes that require central resources, in contrast to the automatic processes of lexicalisation, word retrieval, and parsing. 10 Aims: We describe types of deliberative processing, and show how these processes underpin high-level processes that feature strongly in language. We focus on metalin- guistic processing, strategic processing, inhibition, and planning. We relate them to frontal-lobe function and the development of the fronto-striate loop. We then focus on the role of deliberative processes in normal and pathological development and ageing, 15 and show how these processes are particularly susceptible to deterioration with age. In particular, many of the commonly observed language impairments encountered in ageing result from a decline in deliberative processing skills rather than in automatic language processes. Main Contribution: We argue that central processing plays a larger and more important 20 role in language processing and acquisition than is often credited. Conclusions: Deliberative language processes permeate language use across the lifespan. They are particularly prone to age-related loss. We conclude by discussing implications for therapy.
Original languageEnglish
Pages (from-to)123–153
Number of pages31
JournalAphasiology
Volume25
Issue number2
DOIs
StatePublished - Feb 2011

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process
Psycholinguistics
language
aging
age
development
Frontal Lobe
Inhibition (Psychology)
psycholinguistics
life-span
therapy
acquisition
planning
contribution
function
resources
Language acquisition
Resources
Lexicalization
Metalinguistics

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Harley, Trevor A.; Jessiman, Lesley J.; MacAndrew, Siobhan B. G. / Decline and fall : a biological, developmental, and psycholinguistic account of deliberative language processes and ageing.

In: Aphasiology, Vol. 25, No. 2, 02.2011, p. 123–153.

Research output: Contribution to journalArticle

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Decline and fall : a biological, developmental, and psycholinguistic account of deliberative language processes and ageing. / Harley, Trevor A.; Jessiman, Lesley J.; MacAndrew, Siobhan B. G.

In: Aphasiology, Vol. 25, No. 2, 02.2011, p. 123–153.

Research output: Contribution to journalArticle

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