I commend Johanne Paradis not only for her interesting Keynote Article but also for the careful research that she has conducted along with her collaborators in the area of bilingual language development and disorders. Her contributions have been significant and are sure to shape our theoretical as well as clinical understanding of specific language impairment (SLI). In this Commentary, I focus on three issues. The first stems quite directly from ideas raised in the Keynote Article; the second and third deal with factors that we need to consider when conducting research involving comparison groups of bilingual and monolingual children with SLI.

The current study investigated the contribution of multiple verbal and working memory (WM) skills to morphosyntactic prediction in Turkish-speaking 4- to 8-year-old children. In a visual world eye-tracking experiment, 76 children were presented with verb-final sentences with nominative and accusative case markers on the initial noun (e.g., the fast rabbitnominative … the carrotaccusative eatfuture vs. the fast rabbitaccusative … the foxnominative eatfuture) while they were looking at a visual display with three objects (e.g., rabbit, carrot, and fox). Importantly, the case markers on the initial noun could be used to predict the second noun in these sentences. The results revealed that when children’s early productive vocabulary and language production skills were higher, the better and faster they were in predicting the upcoming noun. The episodic buffer, a component of WM, was also positively associated with children’s morphosyntactic prediction abilities. The implications of these results for the mechanisms of linguistic prediction are discussed.

The current study investigated native English and native Arabic speakers’ phonological short-term memory for sequences of consonants and vowels. Phonological short-term memory was assessed in immediate serial recall tasks conducted in Arabic and English for both groups. Participants (n = 39) heard series of six consonant–vowel syllables and wrote down what they recalled. Native speakers of English recalled the vowel series better than consonant series in English and in Arabic, which was not true of native Arabic speakers. An analysis of variance showed that there was an interaction between first language and phoneme type. The results are discussed in light of current research on consonant and vowel processing.

There is a good deal of interest in the application of neurocognitive techniques to investigate the underpinnings of developmental language impairments (DLIs). Electrophysiological techniques such as electroencephalography and magnetoencephalography offer the promise of the ability to track brain activity with precision in time and space. This article describes a number of findings from studies of normal adults and children that are relevant to neurocognitive studies of developmental language impairments and outlines a series of challenges that should be met in order for electrophysiological measures to realize their promise.

Baum and Titone's Keynote Article is a welcome addition to the ongoing and flourishing study of the neurocognitive effects of bilingualism. By focusing their review on executive control in bilinguals from the perspectives of both aging and neuroplasticity in general they have broadened our thinking in useful ways. Because my own research has focused on the early stages of aging and bilingualism in preschool and school-age children, I have chosen to comment on their review with reference to these kinds of learners. I will also focus on the language acquisition part of this discussion because at the heart of the issue is how and to what extent acquisition of more than one language affects cognitive development. My comments reinforce what I believe are important observations in their review and simultaneously seek to extend their call to expand our frames of reference in research on bilinguals even further.

In this study we examined syntactic ambiguity resolution in two different Chinese languages, Cantonese and Mandarin, which are relatively similar grammatically but very different phonologically. We did this using four-character sentences that could be read using two, two-syllable sequences (2-2) or a structure where the first syllable could be read by itself. The results showed that when both potential readings were semantically congruent, Mandarin speakers had a strong preference for the 2-2 structure and they preferred that structure much more than Cantonese speakers did. We attribute this to Mandarin having a more dominant bisyllabic prosodic foot than Cantonese. When the 2-2 meaning was semantically incongruent, however, the alternative structure was preferred by both Mandarin and Cantonese speakers. Overall, the results suggest that, in silent reading tasks and semantically neutral conditions, the prosodic foot is generated automatically and can affect syntactic choices when ambiguity arises.

This paper describes the next steps for establishing detailed, useful behavioral phenotypes and for moving forward in the study of the relationships among genes, the environment, and language disorders. Key issues are recognizing the continuum of language behaviors to accurately describe disorders and the spectrum of typical development. A coordinated plan with foundational studies that address definition, measurement, design, and analytical methods is needed. Researcher capacity must be increased, and a greater focus on communication across disciplines to successfully accomplish interdisciplinary research is required. Language is not static, even in disorders; thus, we must study change over time. It is necessary to think about behavioral phenotypes in terms of developmental trajectories. Finally, data sharing and ethical and legal issues must be addressed.

This study deals with repentistas: oral poets in the northeast of Brazil, most of whom have had limited schooling. Twenty-four repentistas, 27 non-repentistas from a similar background, and 38 university students were given a rhyme production task. The repentistas produced about three times as many rhymes as the SES-matched non-repentistas and over one-and-a-half times as many as the students. They did not, however, differ significantly from the nonrepentistas or students in regard to auditory memory or phonological segmentation; they were similar to non-repentistas and considerably worse than students on tests of IQ and reading speed. Thus, the rhyming ability of the repentistas appears to be both highly developed and dissociated from certain other language skills.

The contribution of vocabulary to academic achievements in general and to reading comprehension (RC) in particular has led to the development of various tools for vocabulary assessment. However, existing assessments do not distinguish between word types, and specifically, they do not target emotion vocabulary, despite growing recognition of the importance of emotional processing to RC ability. In this study, we first describe the development of a novel vocabulary assessment in Hebrew – Herut – and examine its validity and sensitivity. This assessment includes both emotion words and nonemotion words, and is based on curriculum. Next, we studied the contribution of the emotion and nonemotion words subscales of the Herut to RC in a sample of 1,333 Hebrew-speaking fourth- and fifth-grade students. Both types of vocabulary knowledge made significant independent contributions to RC, and the contribution of emotion words was slightly larger than that of nonemotion words. Finally, the Herut measure was found to be more predictive of RC than a general vocabulary measure in Hebrew.

In children and adults, naming an item sometimes interferes with later attempts to name other items. Adult speakers experience cumulative semantic interference, interpreted as the result of incremental learning. Studies to date have not examined whether incremental learning can also account for interference in children. This study examined context effects on picture naming in 3-year-old children, and investigated whether children, like adults, show interference that is semantically based and cumulative. Children named pictures from semantically homogeneous and mixed sets. Response latency, accuracy, and repetition errors were recorded. The results demonstrated a progressive slowing of responses in the semantically homogeneous condition that was greater than that observed for the mixed condition. There were no significant effects for accuracy. Repetition errors, although infrequent, patterned similarly to previous reports for adults. The results indicate that preschool-aged children experience cumulative semantic interference in naming, and suggest that incremental learning may account for interference effects across development.

The unintelligible speech of many developmentally delayed children poses problems for language intervention and language assessment efforts. Eighteen developmentally delayed children in Brown's (1973) stage I and their parents participated in two studies of the relationship between verbal routines and the intelligibility of developmentally delayed children's speech. The first study demonstrated that more intelligible child speech was found in routines than in nonroutines. To determine if routine utterances were articulated more accurately than nonroutine utterances, the second study extracted a representative sample of routine and nonroutine utterances from their visual and discourse contexts and asked two naive observers to transcribe them. To investigate the possible effect of contextual information, the naive observers transcribed the extracted utterances under context-information-present and context-information- absent conditions. The results indicated that extracted utterances were more intelligible under context-information-present conditions. The results were interpreted as indicating that child speech was more intelligible in routines than nonroutines because routines provide adults with more context information for interpreting ambiguous child utterances.

The present study sought to obtain initial data on children's use of the clitic pronoun se in Romance (e.g., Se cayó ‘He/she fell’) and regular (e.g., Se peinó ‘He/she combed himself/herself’) reflexive constructions. A total of 40 monolingual Spanish-speaking children between the ages of 2 and 4 years were given two structured tasks that assessed the contrastive use of se for coding these functions. In addition, spontaneous speech data were obtained on the children's use of this clitic pronoun. To establish expected adult-like performance on the Romance reflexive task, responses from 20 Spanish-speaking adults were obtained. The results suggest that there is a differential order of acquisition of the clitic se, whereby children initially contrast regular reflexive with nonreflexive clitic constructions and later contrast between Romance and non-Romance reflexive verb pairs. Possible reasons for this difference in use are presented as these relate to issues of lexical development and the language's marking of transitivity.

American 5-year-olds and adults learned to label various spatial relationships using four Japanese locatives that coincided or partially overlapped in meaning with the locative prepositions into, onto, out of, and off.

Subjects' generalization of the Japanese words was pre- and post-tested to determine if locatives that were semantically (and to a small extent phonemically) similar to their English equivalents would yield better transfer than terms that deviated in meaning and phonemic structure from English. Results confirmed for children only that generalization was differentially affected following lexical training. Adults generalized all four Japanese words with equal accuracy and showed significantly better transfer than children on all but one locative.

Lexical interference initially accounted for many adult and child substitution errors, but did not explain child errors on the post-test. Findings did not agree with predictions that semanticphonemic differences between English and Japanese locatives would adversely affect transfer of the Japanese lexicon to novel exemplars of these terms. Results did confirm, however, that adults learned the Japanese lexicon faster and better than the 5-year-olds.

This study is an investigation of the patterns and strength of the connections between English dative verbs and the double object dative (DOD) argument structure in native speaker production. The subjects completed three written production tasks using dative and other verbs from different semantic classes of verbs. The results show that alternating dative verbs varied in their patterns of connection to argument structures, but were consistent in the strength of their connection to the DOD argument structure across subjects and tasks. There was no support for production differences due to verb class membership, but the results do support a model of lexical representation that represents variable strengths of association between individual verbs and argument structures. With respect to the design of production and processing studies, the results do not support the treatment of alternating dative verbs as a unitary group, nor a priori assumptions about relative argument structure complexity between alternating and nonalternating verbs, but do support the use of production tasks to determine individual verb argument structure preferences.

Knowledge of the environmental and genetic etiologies of complex cognitive disorders can guide strategies for diagnosis, prevention, and therapy, but disentangling the various causes can be very challenging. Two basic approaches can be used in identifying genetic factors, a top-down approach, in which phenotypic descriptions are used to discover genes that influence those phenotypes, and a bottom-up approach, comparing the phenotypic effects of genes that are known to cause syndromes that include cognitive disabilities. Thorough characterization of phenotypes throughout development is critical to both of these methods. These strategies have been applied to the characterization of genetic etiologies for reading disability, language disorders, attention-deficit hyperactivity disorder, and autism.

Prior research with adult participants reported a rightward bias in the reading version of the flankers task. Here, we investigated how this bias evolves as a function of reading expertise. We tested two groups of French primary school children from Cycle 2 (grades 1 and 2) and Cycle 3 (grades 4 and 5) and one group of adult participants. In the related flanker conditions, the central target word was flanked by the same word either on the left (park park ####), the right (#### park park), or on both sides (park park park). In the unrelated conditions, the repeated flanker words were replaced by a different unrelated word. In the analysis of standardized reaction times (RTs), there was a three-way interaction between the three groups of participants and the impact of flanker relatedness as a function of the position of the related flankers. This three-way interaction reflected the significantly greater increase in effects of flanker relatedness between Cycle 2 and Cycle 3 for the bilateral flanker and the right flanker conditions compared with the left flanker condition. This suggests that the rightward bias is driven by attentional asymmetries that develop during the process of learning to read.

As a reliable and valid measures of perceptual auditory laterality, dichotic listening has been successfully applied in studies in many countries and languages. However, languages differ in the linguistic relevance of change in initial phoneme of words (e.g., for word identification). In the present cross-language study, we examine the effect of these differences on dichotic-listening task performance to establish how characteristics of one's native language affect the perception of nonnative phonological features. We compared 33 native speakers of Norwegian, a language characterized by a clear distinction between voiced and unvoiced initial plosive consonants, with 30 native speakers of Estonian, a language that has exclusively unvoiced initial phonemes. Using a free-report dichotic-listening paradigm utilizing pairs of voiced (/ba/, /da/, /ga/) and unvoiced (/pa/, /ta/, /ka/) stop-consonant vowels as stimulus material, the Norwegian native speakers were found to be more sensitive to the voicing of the initial plosive than the Estonian group. “Voicing” explained 69% and 18% of the variance in the perceptual auditory laterality in the Norwegian and the Estonian sample, respectively. This indicates that experiential differences, likely during acquisition of the mother tongue in early development, permanently shape the sensitivity to the voicing contrast.

Learning the sounds of letters is important for learning to decode printed words and is a key component of phonics instruction. Some letter sounds are easier for children than others, and studies of these differences can shed light on the factors that influence children’s learning. The present study examined knowledge of the sounds of lowercase letters among children in England, where a government-mandated curriculum specifies the order in which letter sounds should be taught and where letters’ sounds are taught before the names. The participants were 355 children from Nursery (mean age 4 years, 4 months), Reception (mean age 5 years, 4 months), and Year 1 (6 years, 4 months) classes. When order of teaching was statistically controlled, children did better than expected on the initial letter of their first name and worse on visually confusable letters. Unlike the North American children in previous studies, they did not perform better on letters that had their sounds at the beginning of their names than on other types of letters. The sonority and the age of acquisition of the letter’s sound were also not influential. Implications for letter teaching, particularly for children at risk of literacy problems, are discussed.

Linguists have described the English vocabulary as including Latinate and basic subsystems. In three experiments with a total of 93 participants, we asked whether skilled readers are sensitive to graphotactic differences between these systems. Participants saw pairs of nonwords and were asked to choose the item in each pair that appeared more wordlike. Participants were more likely to select an item with an onset and an ending that suggested the same system than an item with a mismatch. Participants also used the presence of a single versus double medial consonant as a marker of the system to which an item belongs. The results suggest that skilled readers have learned about some of the graphotactic differences between Latinate and basic words and do not treat English as a monolithic system.