Stages rather than ages in the acquisition of movement structures: Data from sentence repetition and 27696 spontaneous clauses

This study explored the order of acquisition of various types of syntactic-movement and embedding structures in Hebrew, using a sentence-repetition task, in which 60 children aged 2;2-3;10 repeated 80 sentences (with a total of 4800 sentences), and an analysis of the spontaneous speech of 61 children aged 1;6-6;1 (27,696 clauses). The sentence repetition task revealed a set order of acquisition of the various types of syntactic movement: A-movement is acquired first, then A-bar-movement, and finally movement of the verb to C. The analysis of spontaneous speech revealed the same order: A-movement of the object of unaccusative verbs to subject position appears first, together with simple SV sentences; then, wh-questions appear, then relative clauses and topicalization, which appear together with embedding of finite clauses, and lastly, V-to-C movement. Previous studies have shown that Hebrew speakers under age six have difficulty comprehending and producing sentences with A-bar-movement in which a lexically-restricted object crosses over a lexically-restricted subject. And indeed, whereas children produced A-bar structures very early (wh-questions from age 1;6, relative-clauses and topicalization from age 2;6), until age 5;8 these structures never included a lexical DP crossing over another lexical DP. Both tasks indicated that the order of structure acquisition is fixed, creating Guttman scales between structures, but different children acquire the same structure at very different ages. It seems that whereas the syntactic path and the stages of structure acquisition along it are constant between children, each child walks this path in their own pace.

Sentence Repetition as a Clinical Marker of Developmental Language Disorder: Evidence From Arabic

Purpose: Research on the typical and impaired grammatical acquisition of Arabic is limited. This study systematically examined the morphosyntactic abilities of Arabic-speaking children with and without developmental language disorder (DLD) using a novel sentence repetition task. The usefulness of the task as an indicator of DLD in Arabic was determined. Method: A LITMUS (Language Impairment Testing in Multilingual Settings) sentence repetition task was developed in Palestinian Arabic (LITMUS-SR-PA-72) and administered to 30 children with DLD ( M = 61.50 months, SD = 11.27) and 60 age-matched typically developing (TD) children ( M = 63.85 months, SD = 10.16). The task targeted grammatical structures known to be problematic for Arabic-speaking children with DLD (language specific) and children with DLD across languages (language independent). Responses were scored using binary, error, and structural scoring methods. Results: Children with DLD scored below TD children on the LITMUS-SR-PA-72, in general, and in the repetition of language-specific and language-independent structures. The frequency of morphosyntactic errors was higher in the DLD group relative to the TD group. Despite the large similarity of the type of morphosyntactic errors between the two groups, some atypical errors were exclusively produced by the DLD group. The three scoring methods showed good diagnostic power in the discrimination between children with DLD and children without DLD. Conclusions: Sentence repetition was an area of difficulty for Palestinian Arabic–speaking children with DLD. The DLD group demonstrated difficulties with language-specific and language-independent structures, particularly complex sentences with noncanonical word order. Most grammatical errors made by the DLD group resembled those of the TD group and were mostly omissions or substitutions of grammatical affixes or omissions of function words. SR appears to hold promise as a good indicator for the presence or absence of DLD in Arabic. Further validation of these findings using population-based studies is warranted. Supplemental Material https://doi.org/10.23641/asha.16968043

Practice Mediates Bidirectional Dual-Task Interference When Performing a Novel Sequential Nonword Repetition Task

Introduction The current study examined the extent to which practice amount mediates dual-task interference patterns associated with concurrent performance of a novel speech task and attention-demanding visuomotor task. Method A Sequential Nonword Repetition Task was used to examine the effect of practice on interference associated with concurrent performance of a Visuomotor Pursuit Task. Twenty-five young adult participants were assigned to either an Extended Practice Group or a Limited Practice Group and performed a novel Sequential Nonword Repetition Task in isolation and while performing a concurrent visuomotor pursuit rotor task. Results Participants in the Limited Practice Group who were afforded a limited amount of practice exhibited dual-task interference (i.e., dual-task performance reductions) for both the speech and visuomotor tasks (i.e., bidirectional dual-task interference). Conversely, participants in the Extended Practice Group who were afforded extended practice exhibited little-to-no observable dual-task interference on the nonword repetition task. Conclusion Data from the current investigation suggest that the amount of initial practice mediates the degree of dual-task interference observed when a novel speech production task is performed with an attention-demanding Visuomotor Pursuit Task. Supplemental Material https://doi.org/10.23641/asha.14608071

The Morphosyntactic Abilities of Bilingual Malay Preschool Children Based on the Malay and English Sentence Repetition Tasks

Sentence repetition task has been proven to be a tool that can detect language difficulties and is indicative of abnormal language. In Malaysia, studies on the language abilities of bilingual children in sentence repetition (SR) tasks are sparse. Therefore, this study is aimed at examining the morphosyntactic abilities of 60 bilingual Malay children aged 4;0 to 6;11 based on SR tasks in Malay (L1) and English (L2). In the SR task, participants were asked to listen carefully to sentences being read out and then repeat verbatim the sentences heard. Their responses were scored based on accuracy, syntax, grammar, and word categories. The findings demonstrated a significant difference between the two languages in terms of accuracy [df= 118, t=1.990, p= .049]; the Malay language had statistically higher scores compared to English scores. There was also a significant difference on the performance based on age factor, [Malay (df5,54=3.561, p= .007); English (df5,54=2.894, p= .022)]. The results also revealed that the omission of both content and function words was more prominent compared to other error types. A triangulation of the quantitative and qualitative data was done. The findings highlighted the morphosyntactic abilities of the bilingual children in both languages and error patterns produced.

Does Timing in Acquisition Modulate Heritage Children’s Language Abilities? Evidence from the Greek LITMUS Sentence Repetition Task

Recent proposals suggest that timing in acquisition, i.e., the age at which a phenomenon is mastered by monolingual children, influences acquisition of the L2, interacting with age of onset of bilingualism and amount of L2 input. Here, we examine whether timing affects acquisition of the bilingual child’s heritage language, possibly modulating the effects of environmental and child-internal factors. The performance of 6- to 12-year-old Greek heritage children residing in Germany (age of onset of German: 0–4 years) was assessed across a range of nine syntactic structures via the Greek LITMUS (Language Impairment Testing in Multilingual Settings) Sentence Repetition Task. Based on previous studies on monolingual Greek, the structures were classified as “early” (main clauses (SVO), coordination, clitics, complement clauses, sentential negation, non-referential wh-questions) or as “late” (referential wh-questions, relatives, adverbial clauses). Current family use of Greek and formal instruction in Greek (environmental), chronological age, and age of onset of German (child-internal) were assessed via the Questionnaire for Parents of Bilingual Children (PABIQ); short-term memory (child-internal) was measured via forward digit recall. Children’s scores were generally higher for early than for late acquired structures. Performance on the three early structures with the highest scores was predicted by the amount of current family use of Greek. Performance on the three late structures was additionally predicted by forward digit recall, indicating that higher short-term memory capacity is beneficial for correctly reconstructing structurally complex sentences. We suggest that the understanding of heritage language development and the role of child-internal and environmental factors will benefit from a consideration of timing in the acquisition of the different structures.

Codeswitching within prepositional phrases: Effects of switch site and directionality

Aims and Research Questions: Codeswitching (CS) was investigated among English-Hebrew bilingual preschool children in a sentence repetition task focusing on switching at different points in prepositional phrases (PPs). We asked the extent to which sentence repetition accuracy differed (1) as a function of the switch site in the PP and (2) as a function of directionality, English-to-Hebrew versus Hebrew-to-English CS. Design/Methodology: English/first language (L1)-Hebrew/second language (L2), sequential bilingual children ( N = 65), ages 5;5–6;5, participated. Thirty-six English and 36 Hebrew stimulus sentences were matched for semantic content and syntax. English stimulus sentences contained switches to Hebrew; Hebrew stimuli contained switches to English. Six ‘switch’ conditions were examined: a single codeswitched noun (N), a determiner–noun switch (DET+N), a codeswitched preposition (P), a preposition–determiner switch (P+DET), a switch of the entire PP (P+DET+N), and a no-switch condition. Data and Analysis: Audio recordings were transcribed and coded. Full sentence repetition was coded as correct/incorrect. The number of errors and the proportion of CS errors were computed. A 6 × 2 repeated-measures analysis of variance examined the effects of switch site within the PP and directionality (L1-to-L2 versus L2-to-L1). Findings/Conclusions: Accuracy was highest for the non-switched, N, and P+DET+N conditions. Accuracy was lowest for DET+N switches in English sentences, and for P switches in Hebrew sentences, and these two conditions showed the highest proportion of CS errors. The findings show evidence for a hierarchy of processing costs and directionality differences, which are interpreted in terms of contrastive typological features, particularly definiteness marking in the two languages, English by a free morpheme, and Hebrew by a bound clitic.

Neuroimaging of the Syllable Repetition Task in Children With Residual Speech Sound Disorder

Purpose This study investigated phonological and speech motor neural networks in children with residual speech sound disorder (RSSD) during an overt Syllable Repetition Task (SRT). Method Sixteen children with RSSD with /ɹ/ errors (6F [female]; ages 8;0–12;6 [years;months]) and 16 children with typically developing speech (TD; 8F; ages 8;5–13;7) completed a functional magnetic resonance imaging experiment. Children performed the SRT (“SRT-Early Sounds”) with the phonemes /b, d, m, n, ɑ/ and an adapted version (“SRT-Late Sounds”) with the phonemes /ɹ, s, l, tʃ, ɑ/. We compared the functional activation and transcribed production accuracy of the RSSD and TD groups during both conditions. Expected errors were not scored as inaccurate. Results No between-group or within-group differences in repetition accuracy were found on the SRT-Early Sounds or SRT-Late Sounds tasks at any syllable sequence length. On a first-level analysis of the tasks, the TD group showed expected patterns of activation for both the SRT-Early Sounds and SRT-Late Sounds, including activation in the left primary motor cortex, left premotor cortex, bilateral anterior cingulate, bilateral primary auditory cortex, bilateral superior temporal gyrus, and bilateral insula. The RSSD group showed similar activation when correcting for multiple comparisons. In further exploratory analyses, we observed the following subthreshold patterns: (a) On the SRT-Early Sounds, greater activation was found in the left premotor cortex for the RSSD group, while greater activation was found in the left cerebellum for the TD group; (b) on the SRT-Late Sounds, a small area of greater activation was found in the right cerebellum for the RSSD group. No within-group functional differences were observed (SRT-Early Sounds vs. SRT-Late Sounds) for either group. Conclusions Performance was similar between groups, and likewise, we found that functional activation did not differ. Observed functional differences in previous studies may reflect differences in task performance, rather than fundamental differences in neural mechanisms for syllable repetition.

Consistency of a Nonword Repetition Task to Discriminate Children with and without Developmental Language Disorder in Catalan–Spanish and European Portuguese Speaking Children

Nonword repetition has been proposed as a diagnostic marker of developmental language disorder (DLD); however, the inconsistency in the ability of nonword repetition tasks (NRT) to identify children with DLD raises significant questions regarding its feasibility as a clinical tool. Research suggests that some of the inconsistency across NRT may be due to differences in the nature of the nonword stimuli. In this study, we compared children’s performance on NRT between two cohorts: the children in the Catalan–Spanish cohort (CS) were bilingual, and the children in the European Portuguese cohort (EP) were monolingual. NRT performance was assessed in both Spanish and Catalan for the bilingual children from Catalonia-Spain and in Portuguese for the monolingual children from Portugal. Results show that although the absolute performance differed across the two cohorts, with NRT performance being lower for the CS, in both Catalan and Spanish, as compared to the EP cohort in both, the cut-points for the likelihood ratios (LH) were similar across the three languages and mirror those previously reported in previous studies. However, the absolute LH ratio values for this study were higher than those reported in prior research due in part to differences in wordlikeness and frequency of the stimuli in the current study. Taken together, the findings from this study show that an NRT consisting of 3-, 4-, and 5-syllable nonwords, which varies in wordlikeness ratings, when presented in a random order accurately identifies and correctly differentiates children with DLD from TD controls the child is bilingual or monolingual.

Can we repeat what we do not say in L2?

The paper analyzes the results of a sentence repetition task performed by Lithuanian L2 speakers of different language proficiency levels. This paper focuses on a set of targeted verb forms included in the task because they are less likely to occur in free production. The different forms the speakers produced are analyzed by considering their correspondence (or not) to the targeted form, by comparing the speakers among each other with respect to their learner variety and by comparing the task results to the repertoire of the same speaker in the free production data. In multiple cases of failed re-production, the analysis examines what the targeted forms were substituted with and tries to identify possible reasons for such substitution. This analysis confirms the general inability of the basic variety speakers to distinguish between morphologically different forms and the dominant trend showing that L2 learners are more meaning-focused than form-focused. The analysis also shows growing implicit knowledge, or at least gradual passive acquisition, of the less frequent forms as the speaker advances in the post-basic continuum.