Anne-Marie Adams

Phonological short‐term memory and vocabulary development: further evidence on the nature of the relationship

The nature and generality of the developmental association between phonological short-term memory and vocabulary knowledge was explored in two studies. Study 1 investigated whether the link between vocabulary and verbal memory arises from the requirement to articulate memory items at recall or from earlier processes involved in the encoding and storage of the verbal material. Four-year-old children were tested on immediate memory measures which required either spoken recall (nonword repetition and digit span) or recognition of a sequence of nonwords. The phonological memory-vocabulary association was found to be as strong for the serial recognition as recall-based measures, favouring the view that it is phonological short-term memory capacity rather than speech output skills which constrain word learning. In Study 2, the association between phonological memory skills and vocabulary knowledge was found to be strong in teenaged as well as younger children, indicating that phonological memory constraints on word learning remain significant throughout childhood.

Limitations in working memory : implications for language development

In this study, the proposal that individual differences in spoken language acquisition may be due to limitations in short-term memory abilities was investigated within a working memory framework. The relationship speech production skills and working memory abilities was examined in two groups of 4-year-old children, matched for non-verbal ability but who had either relatively good or poor non-word repetition skills. Children with better non-word repetition skills produced speech that comprised a wider repertoire of words, on average longer utterances and a greater range of syntactic constructions than did children with relatively poor non-word repetition skills. The significant association found between these indices of language development and verbal short-term memory span assessed with non-spoken recall, suggested that this relationship was not merely due to the common output requirements of the language and memory tasks. Inconsistent associations between language performance and two tasks of visuo-spatial short-term memory precluded firm conclusions being drawn regarding the specificity of the relationship to the phonological domain. Cognitive mechanisms that may underlie the association between spoken language development and working memory skills are discussed.

Working memory and phonological awareness as predictors of progress towards early learning goals at school entry

This study investigates whether working memory skills of children are related to teacher ratings of their progress towards learning goals at the time of school entry, at 4 or 5 years of age. A sample of 194 children was tested on measures of working memory, phonological awareness, and non-verbal ability, in addition to the school-based baseline assessments in the areas of reading, writing, mathematics, speaking and listening, and personal and social development. Various aspects of cognitive functioning formed unique associations with baseline assessments; for example complex memory span with rated writing skills, phonological short-term memory with both reading and speaking and listening skills, and sentence repetition scores with both mathematics and personal and social skills. Rated reading skills were also uniquely associated with phonological awareness scores. The findings indicate that the capacity to store and process material over short periods of time, referred to as working memory, and also the awareness of phonological structure, may play a crucial role in key learning areas for children at the beginning of formal education.

Phonological Working Memory and Spoken Language Development in Young Children

This study investigated the relationship between phonological working memory and spoken language development in a large unselected sample of 4- and 5-year old children. Assessments were made of the language produced by the children on the Bus Story (Renfrew, 1969), a standard test of continuous speech. In this test, children listen to a story, which they then recount with the aid of visual clues. The amount of information recalled and the average length of the five longest utterances are taken as indices of childrens expressive language abilities. Phonological working memory skills were indexed by memory span and the ability to repeat non-words. The ability to repeat non-words made a significant contribution to the variance in the childrens speech independently of age, vocabulary knowledge, and nonverbal cognitive skills. The possible mechanisms by which skills assessed by phonological memory tasks may be linked to the development of speech production abilities are considered.

Working Memory and Spoken Language Comprehension in Young Children

This study has two theoretical dimensions: (a) to explore which components of Baddeleys (1986) working memory model are associated with childrens spoken language comprehension, and (b) to compare the extent to which measures of the components of this fractionated model and an index of a unitary model (listening span) are able to predict individual differences in spoken language comprehension. Correlational analyses revealed that within a group of 66 4- and 5-year-old children both listening span and phonological memory, but not visuospatial memory, were associated with vocabulary knowledge and spoken language comprehension. However, of the proposed measures of central executive function - dual task coordination, sustained attention, verbal fluency - only the latter was related to childrens ability to understand spoken language. Hierarchical regression analyses indicated that variance in vocabulary knowledge was best explained by phonological memory skills, whereas individual differences in spoken langu...

Different Components of Working Memory Have Different Relationships with Different Mathematical Skills.

A comprehensive working memory battery and tests of mathematical skills were administered to 90 children-41 in Year 1 (5-6 years of age) and 49 in Year 3 (7-8 years of age). Working memory could explain statistically significant variance in number writing, magnitude judgment, and single-digit arithmetic, but the different components of working memory had different relationships with the different skills. Visual-spatial sketchpad (VSSP) functioning predicted unique variance in magnitude judgments and number writing. Central executive functioning explained unique variance in the addition accuracy of Year 1 children. The unique variance explained in Year 3 multiplication explained by phonological loop functioning just missed conventional levels of significance (p=.06). The results are consistent with the VSSP having a role in the development of number writing and magnitude judgments but a lesser role in early arithmetic.

Identifying the cognitive predictors of early counting and calculation skills: Evidence from a longitudinal study.

The extent to which phonological, visual-spatial short-term memory (STM), and nonsymbolic quantitative skills support the development of counting and calculation skills was examined in this 14-month longitudinal study of 125 children. Initial assessments were made when the children were 4 years 8 months old. Phonological awareness, visual-spatial STM, and nonsymbolic approximate discrimination predicted growth in early calculation skills.These results suggest that both the approximate number system and domain-general phonological and visual-spatial skills support early calculation. In contrast, only performance on a small nonsymbolic quantity discrimination task (where the presented quantities were always within the subitizing range) predicted growth in cardinal counting skills. These results suggest that the development of counting and the development of calculation are supported by different cognitive abilities.

The impact of the development of verbal recoding on children's early writing skills

BACKGROUND The spontaneous recoding of visual stimuli into a phonological code to aid short-term retention has been associated with progress in learning to read (Palmer, 2000b). AIM This study examined whether there was a comparable association with the development of writing skills. SAMPLE One hundred eight children (64 males) in the second year of the UK educational system (mean age 5:8 years, SD = 4 months) were recruited to the study. METHODS The children participated in tasks to assess their general cognitive abilities, reading skills, and their predominant short-term memory (STM) strategy for retaining visually presented stimuli. On the basis of their memory profile, children were classified as either engaging in verbal recoding of the stimuli (N = 31) or not (N = 77). Writing performance was indexed as alphabet transcription, spelling, and early text production skills. RESULTS Children classified as verbal recoders demonstrated better spelling performance and produced more individual letters, words, and T-units in their texts than did children who persisted with a visual memory strategy. In contrast, the alphabet transcription abilities of the groups did not differ. Hierarchical regression analyses revealed that variance in text production skills was associated with STM capacity and that moreover, significant independent variance in the number of words and T-units in the childrens texts was predicted by individual differences in verbal recoding abilities. CONCLUSION The results suggest that the development of verbal recoding skills in STM may play a role in childrens early progress in writing, particularly their text generation skills.

Working Memory and Writing in Bilingual Students

The vocabulary, spelling and writing skills of French/English bilingual students aged between 12 and 15 years were assessed, along with their verbal working memory (VWM), visuo-spatial working memory (VSWM) and phonological short-term memory (PSTM) skills. The extent to which individual differences in writing performance reflected variations in working memory skills which were specific to the memory domain and the language of testing was assessed. All three components of working memory were significantly associated across languages confirming their independence in this bilingual sample. Significant associations were also identified between vocabulary knowledge and VWM in both languages. For text composition in English, significant associations were identified between spelling and PSTM assessed in English, with medium sized, but non-significant, correlations identified with vocabulary knowledge and VWM. For text composition in French, although the associations with spelling, PSTM and VWM were of a moderate effect size, none of these associations reached significance. Comparisons across languages revealed that although writing in English was not significantly associated with either French vocabulary or spelling, writing in French was associated with both these subcomponent skills assessed in English. Visuo-spatial working memory bore little association with either spelling or writing skills either within or across languages. Broadly speaking therefore the data were consistent with an interpretation of the relationship between working memory and writing that reflects a domain-specific view of the capacity limitations in working memory which constrain writing performance, rather than limitations imposed by a domain-general attentional construct. However, it was proposed that these verbal processing effects are not language-specific.

Exploring the relationship between executive functions and self-reported media-multitasking in young adults

ABSTRACT Media-multitasking involves simultaneous engagement with information streams from multiple media sources, and is most prevalent in young adults. Heavy media-multitasking has been associated with differential performance on tasks involving attentional control and working memory relative to light media-multitasking. The aim of the present study was to systematically investigate relationships between executive functions and self-reported media-multitasking. Healthy participants (N = 112, aged 18–25, male N = 36) completed a battery of 10 traditional executive function tasks, that included assessments of attentional inhibition, response inhibition, working memory, and cognitive flexibility. Scores on the individual executive function tasks were correlated against frequency of self-reported media-multitasking, but no significant relationships were found. Trait anxiety, however, was found to be significantly associated with greater frequency of self-reported media-multitasking. The present study found no evidence of a relationship between the frequency of self-reported media-multitasking and executive functioning. The possible reasons for this are discussed.