Phonological Memory Tests Research Articles

Language Delay: What is the Prognosis of Late Bloomers?

30-50% of late talkers catch-up their language delay during the third year of life. So far it is unclear whether this is a permanent or an illusionary recovery. The aim of the study was to examine the further language development of late bloomers. Language skills of 83 three-year-old children (16 late bloomers [LB], 29 late talkers [LT] with persistent language problems, 38 Non-LT) were assessed with a standardized language test. Before school entry formal language skills, expressive and receptive vocabulary and precursors of written language (verbal memory, phonological awareness, verbal information-processing speed) were assessed. At follow-up before school entry LB scored below Non-LT on phonological memory test. 31% of the LB in contrast to 3% of the Non-LT had slight language problems. 38% had received speech-language therapy. Nevertheless, no LB met the criteria of developmental language disorder. The language skills of LT with persistent language problems remained significantly below the level of LB and Non-LT. Every fourth of these children was language impaired. LB as a group are not at risk for later clinically relevant language disorders. However, their language abilities are often within the lower range of normal variation. Therefore, it is recommended to facilitate their language acquisition either by kindergarten training programs or by parent-directed intervention programs to provide a more stimulating environment.

Developmental consequences of poor phonological short‐term memory function in childhood: a longitudinal study

A longitudinal study investigated the cognitive skills and scholastic attainments at 8 years of age of children selected on the basis of poor phonological loop skills at 5 years. Children with low and average performance at 5 years were tested three years later on measures of working memory, phonological awareness, vocabulary, language, reading, and number skill. Two subgroups of children with poor early performance on phonological memory tests were identified. In one subgroup, the poor phonological memory skills persisted at 8 years. These children performed at comparable levels to the control group on measures of vocabulary, language and mathematics. They scored more poorly on literacy assessments, but this deficit was associated with group differences in complex memory span and phonological awareness performance. The second subgroup of children performed more highly on phonological memory tests at 8 years, but had enduring deficits in language assessments from 4 to 8 years. Persistently poor phonological memory skills do not appear to significantly constrain the acquisition of language, mathematics or number skills over the early school years. More general working memory skills do, however, appear to be crucial.

The Use of Nonword Repetition as a Test of Phonological Memory in Children with Down Syndrome

The Use of Nonword Repetition as a Test of Phonological Memory in Children with Down Syndrome

The Use of Nonword Repetition as a Test of Phonological Memory in Children with Down Syndrome

Recent research suggests a significant relationship between verbal short-term memory and normal language development. Although poor short-term memory and impaired language are features of Down syndrome there has been little investigation of the relationship between these functions in this population, and no studies have included the nonword repetition test devised by Gathercole and Baddeley on which much of the evidence from normal development is based. This study reports the use of nonword repetition with 33 children and teenagers with Down syndrome aged from 5 to 18 years, and investigates the relationship between this test and other memory and language measures. Word repetition was included as an indirect control for the perceptual and speech impairments often associated with this group. Words were repeated significantly more successfully than nonwords and both these tasks were sensitive to word length. Nonword repetition was significantly correlated with age, and when age and nonverbal cognitive ability were controlled, nonword repetition was significantly correlated with all other language-based memory measures, i.e. auditory digit span, word span, sentence repetition, and fluency, and also with memory for a sequence of hand movements, but not with memory for faces or a visual digit span task. There was also a significant relationship between nonword repetition and receptive vocabulary, language comprehension, and reading. When performance on the word repetition task was controlled in addition to age and nonverbal ability, significant correlations between nonword repetition and word span, sentence memory, hand movements, language comprehension, and reading remained. Fewer relationships between auditory digit span and these other measures were established; in particular, there was no association between digit span and the language and reading measures. Results suggest that nonword repetition is a reliable measure of phonological memory in Down syndrome and can predict language comprehension and reading ability.

The assessment of phonological memory skills in preschool children

Findings from a longitudinal study designed to investigate phonological working memory skills in preschool children are reported. Two phonological memory tests, digit span and nonword repetition, were given to a large cohort of children at 3,4 and 5 years of age. The majority of children at all ages cooperated on both tests even at 3 years of age, indicating that the tasks are in principle suitable for use with young children. Individual differences in nonword repetition scores at 3 years were highly stable across the following two‐year period; there was, however, less stability in differences in the children's digit span scores across the same period. It is concluded that phonological memory skills can be reliably assessed in children as young as 3 years, and that the nonword repetition paradigm is highly suitable for this purpose.