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The predictors of reading skills: phonological abilities and verbale short-term memory for serial order

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Academic year: 2021

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The relationships between verbal short-term memory (STM), phonological awareness and rapid naming, which all have been linked to reading skills, remain unclear. Some authors argued that a common phonological factor underlies these three abilities (e.g., Snowling, 2000) while others suggested that verbal STM capacities predict reading abilities independently of a phonological processing factor (e.g., McDougall, Hulme, Ellis, & Monk, 1994). The present study used the distinction between item and serial order STM capacities to better understand the associations between verbal STM, phonological processes and reading acquisition. According to recent STM models (Burgess & Hitch, 1999; Majerus & D’Argembeau, 2011), item STM requires access to underlying phonological and semantic representations while STM for serial order reflects a language-independent system.

Methodology

The predictors of reading skills: phonological abilities and

verbal short-term memory for serial order

Martinez Perez Trecy

ab

, Poncelet Martine

b

, Majerus Steve

ab a Fund of Scientific Research FNRS, Belgium b Department of Psychology, University of Liege, Belgium

The distinction between item and serial order STM capacities allows us to reconcile the mixed findings that have been reported

findings that have been reported in the past concerning the relationship between verbal STM and reading skills. The present study shows that order STM is a capacity independent from phonological processes and is a specific determinant of decoding reading skills in fourth-grade children. At the same time, the present study shows that item STM task taps phonological processes, and hence the association between item STM measures and reading development is explained to a large extent by the common reliance on phonological processes.

Is verbal STM for serial order a specific and independant predictor of reading skills ?

Aim

Results

Discussion

N = 127 children

Mean age : 9.6 years old

Recruited in fourth-grade classrooms Native French speakers

Nonverbal IQ (Raven’s Colored Progressive Matrices) and receptive vocabulary (EVIP) at or above 85

Age-appropriate reading scores (Alouette-R)

«binf»

Response (recall of the nonword) « binf »

2…4…6...8...10...12... The child counted in steps of 2 (during 6 s)

Item STM

30 monosyllabic nonwords Single nonword delayed repetition

«cat – bear – lion »

The child received cards depicting the animals that had been presented

Response (recall of the order of presentation)

Serial order STM

Auditory lists of animal names (3 to 7 items) – 4 trials per length

Participants

Material

Introduction

BAPS 2012 University of Liege

Burgess, N., & Hitch, G. (1999). Memory for serial order: A network model of the phonological loop and its timing. Psychological Review, 106(3), 551-581.

Majerus, S., & D'Argembeau, A. (2011). Verbal short-term memory reflects the organization of long-term memory: Further evidence from short-term memory for emotional words. Journal of Memory and Language, 64(2), 181-197.

McDougall, S., Hulme, C., Ellis, A., & Monk, A. (1994). Learning to read: The role of short-term memory and phonological skills. Journal of Experimental Child Psychology,

58(1), 112-133.

Snowling, M. (2000). Dyslexia, 2nd ed. Oxford: Blackwell Publishing. CORRESPONDANCE

Martinez Perez Trecy

University of Liege – Department of Psychology B33, Boulevard du Rectorat 3

4000 Liege – Belgium

E-mail : Trecy.MartinezPerez@ulg.ac.be

Nonword reading (30 items)

Rapid Automatized Naming (RAN) of objects

Phonological awareness (phoneme blending task of the BELEC battery) 1. 2. 3. 4. 1. RAN _ -.09 -.22* -.06 2. Phonological awareness _ .32*** -.04 3. Item STM _ .18* 4. Serial order STM _ Factor 1 Factor 2 RAN -0.48 0.20 Phonological awareness 0.76 0.35 Item STM 0.77 -0.24 Serial order STM 0.11 -0.91 ΔR² β EVIP .020 .16 RCPM .000 -.00 Phonological awareness .014 .13 Item STM .080 .30*** Serial order STM .055 .23**

1. Partial correlations (vocabulary knowledge and nonverbal intelligence partialled out)

2. Factor loadings for explanatory analysis with varimax rotation

3. Unique contribution in accounting for nonword reading accuracy

Item STM task taped phonological processes while order STM was a capacity independent from phonological processes

Order STM predicted reading skills independently of item STM and phonological measures

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