Individual differences in verbal short-term memory and reading aloud: semantic compensation for weak phonological processing across tasks

TY - JOUR

T1 - Individual differences in verbal short-term memory and reading aloud

T2 - semantic compensation for weak phonological processing across tasks

AU - Savill, Nicola

AU - Cornelissen, Piers Louis

AU - Whiteley, Junior

AU - Woollams, Anna

AU - Jefferies, Elizabeth Alice

N1 - This is an author-produced version of the published paper. Uploaded in accordance with the publisher’s self-archiving policy. Further copying may not be permitted; contact the publisher for details

PY - 2019

Y1 - 2019

N2 - According to contemporary accounts, linguistic behaviour reflects the interaction of distinct representations supporting word meaning and phonology. However, there is controversy about the extent to which this interaction occurs within task-specific systems, specialised for reading and short-term memory, as opposed to between components that support the full range of linguistic tasks. We examined whether individual differences in the efficiency of phonologicalprocessing would relate to the application of lexical-semantic knowledge to support verbal short-term memory, single word reading and repetition. In a sample of 83 participants we related nonword performance in each task (as a marker of phonological capacity in the absence of meaning) to the effects of word imageability (a lexical-semantic variable). We found stronger reliance on lexical-semantic knowledge in participants with weaker phonological processing.This relationship held across tasks, suggesting that lexical-semantic processing can compensate for phonological weakness which would otherwise give rise to poor performance. Our results are consistent with separable yet interacting primary systems for phonology and semantics, with lexical-semantic knowledge supporting pattern completion within the phonological system in a similar way across short-term memory and reading tasks.

AB - According to contemporary accounts, linguistic behaviour reflects the interaction of distinct representations supporting word meaning and phonology. However, there is controversy about the extent to which this interaction occurs within task-specific systems, specialised for reading and short-term memory, as opposed to between components that support the full range of linguistic tasks. We examined whether individual differences in the efficiency of phonologicalprocessing would relate to the application of lexical-semantic knowledge to support verbal short-term memory, single word reading and repetition. In a sample of 83 participants we related nonword performance in each task (as a marker of phonological capacity in the absence of meaning) to the effects of word imageability (a lexical-semantic variable). We found stronger reliance on lexical-semantic knowledge in participants with weaker phonological processing.This relationship held across tasks, suggesting that lexical-semantic processing can compensate for phonological weakness which would otherwise give rise to poor performance. Our results are consistent with separable yet interacting primary systems for phonology and semantics, with lexical-semantic knowledge supporting pattern completion within the phonological system in a similar way across short-term memory and reading tasks.

U2 - 10.1037/xlm0000675

DO - 10.1037/xlm0000675

M3 - Article

SN - 0278-7393

VL - 45

SP - 1815

EP - 1831

JO - Journal of Experimental Psychology: Learning, Memory, and Cognition

JF - Journal of Experimental Psychology: Learning, Memory, and Cognition

IS - 10

ER -