Speakers employ gestures to identify nonpresent objects in nonneutral locations (e.g., pointing to the left to indicate a toy car) and maintain the same spatial locations to indicate the same objects throughout the discourse. These kinds of gestures are referred to as shared-location spatially modulated gestures. Previous research showed that native signers form associations between locations and objects as early as age 5. We examined whether nonsigning children also produced shared-location spatially modulated gestures as early as age 5, and if so, whether such ability is associated with verbal memory, spatial memory, and eductive reasoning (i.e., the ability to derive meaning from the complex situations). Our results showed that nonsigning children use spatial devices in their gestures as early as age 5, but such ability is not well developed until age 7 to 11. It is interesting that different types of cognitive skills may come into play in the production of shared-location spatially modulated gestures across different age groups. We found significant correlations between the production of this type of gesture and spatial memory in the younger children and eductive reasoning in the older children. Thus, there is possibly a developmental shift of the cognitive processes involved in the production of shared-location spatially modulated gestures.

Previous studies show that young, typically developing (TD) children (<age 5) and children with specific language impairment (SLI; >age 5) make errors in the choice between a definite and an indefinite article. Suggested explanations for overgeneration of the definite article include failure to distinguish speaker from hearer assumptions, and for overgeneration of the indefinite article failure to draw scalar implicatures, and weak working memory. However, no direct empirical evidence for these accounts is available. In this study, 27 Dutch-speaking children with high-functioning autism, 27 children with SLI, and 27 TD children aged 5–14 were administered a pragmatic article choice test, a nonverbal theory of mind test, and three types of memory tests (phonological memory, verbal, and nonverbal working memory). The results show that the children with high-functioning autism and SLI (a) make similar errors, that is, they overgenerate the indefinite article; (b) are TD-like at theory of mind, but (c) perform significantly more poorly than the TD children on phonological memory and verbal working memory. We propose that weak memory skills prevent the integration of the definiteness scale with the preceding discourse, resulting in the failure to consistently draw the relevant scalar implicature. This in turn yields the occasional erroneous choice of the indefinite article a in definite contexts.

Artificial grammar learning is an empirical paradigm that investigates basic pattern and structural processing in different populations. It can inform how higher cognitive functions, such as language use, take place. Our study used artificial grammar learning to assess how children with Williams syndrome (WS; n = 16) extract patterns in structured sequences of synthetic speech, how they compare to typically developing (TD) children (n = 60), and how prosodic cues affect learning. The TD group was divided into a group whose nonverbal abilities were within the range of the WS group, and a group whose chronological age was within the range of the WS group. TD children relied mainly on rule-based generalization when making judgments about sequence acceptability, whereas children with WS relied on familiarity with specific stimulus combinations. The TD participants whose nonverbal abilities were similar to the WS group showed less evidence of relying on grammaticality than TD participants whose chronological age was similar to the WS group. In absence of prosodic cues, the children with WS did not demonstrate evidence of learning. Results suggest that, in WS children, the transition to rule-based processing in language does not keep pace with TD children and may be an indication of differences in neurocognitive mechanisms.

Self-paced reading tests (SPRs) are being increasingly adopted by second language (L2) researchers. Using SPR with L2 populations presents specific challenges, and its use is still evolving in L2 research (as well as in first language research, in many respects). Although the topic of several narrative overviews (Keating & Jegerski, 2015; Roberts, 2016), we do not have a comprehensive picture of its usage in L2 research. Building on the growing body of systematic reviews of research practices in applied linguistics (e.g., Liu & Brown, 2015; Plonsky, 2013), we report a methodological synthesis of the rationales, study contexts, and methodological decision making in L2 SPR research. Our comprehensive search yielded 74 SPRs used in L2 research. Each instrument was coded along 121 parameters, including: reported rationales and study characteristics, indicating the scope and nature of L2 SPR research agendas; design and analysis features and reporting practices, determining instrument validity and reliability; and materials transparency, affecting reproducibility and systematicity of agendas. Our findings indicate an urgent need to standardize the use and reporting of this technique, requiring empirical investigation to inform methodological decision making. We also identify several areas (e.g., study design, sample demographics, instrument construction, data analysis, and transparency) where SPR research could be improved to enrich our understanding of L2 processing, reading, and learning.

The present study aimed to identify predictors of one aspect of sign language acquisition, sign learning, in hearing nonsigners. Candidate predictors were selected based on the theory that the observed relationship between phonological short-term memory and L2 lexical learning is due in part to common perceptual-motor processes. Hearing nonsigning adults completed a sign learning task, three assessments of short-term memory for movements (movement STM; two of which used sign-like stimuli), and two visuospatial STM tasks. The final sample included 103 adults, ranging between 18 and 33 years of age. All predictors were moderately to strongly correlated with the sign learning task and to each other. A series of regression analyses revealed that both movement and visuospatial STM uniquely contributed to the prediction of sign learning. These results suggest that perceptual-motor processes play a significant role in sign learning and raise questions about the role of phonological processing.

To date, within the context of second language (L2) word learning, nonspontaneous representational gesture viewing's impact on memory and spontaneous gesture production's impact on communication have been examined separately. Thus, it is unclear whether and how these effects interact, particularly in the same individuals. The present study addresses this question by comparing these effects and by examining their influence on one another. To do so, a dialogic task was employed in which participants learned words from a novel L2 and taught them to other similar participants. The results show that viewing nonspontaneous representational gesture did not affect L2 word recall whereas spontaneous production of different gesture types affected communication and memory of L2 word meanings in varying ways. Furthermore, the results provide evidence that gesture viewing primes production of similar types of gestures, and that the quantity and types of gestures produced differ based on the context of communication. These results indicate that the effects of spontaneous gesture production on communication are stronger than the effects of nonspontaneous gesture viewing on memory, and that these effects influence one another. Together, these results demonstrate that spontaneous gesture production and nonspontaneous gesture viewing play distinct but interrelated roles in L2 acquisition.

The aim of the present study was to investigate whether the recognition speed of Finnish nominal base forms varies as a function of their paradigmatic complexity (stem allomorphy) or productivity status. Nikolaev et al. (2014) showed that words with greater stem allomorphy from an unproductive inflectional class are recognized faster than words with lower stem allomorphy from a productive inflectional class. Productivity of an inflectional paradigm correlates with the number of stem allomorphs in languages like Finnish in that unproductive inflectional classes tend to have higher stem allomorphy. We wanted to distinguish which of these two characteristics provides the benefit to speed of recognition found by Nikolaev et al. (2014). The current study involved a lexical decision task comparing three categories of words: unproductive with three or more stem allomorphs, unproductive with two stem allomorphs, and productive with two stem allomorphs. We observed a facilitation effect for word recognition only for unproductive words with three or more stem allomorphs, but not for unproductive words with two allomorphs. This effect was observed particularly in words of low to moderate familiarity. The findings suggest that high stem allomorphy, rather than productivity of the inflectional class, is driving the facilitation effect in word recognition.

The role of phonological and orthographic awareness on Chinese character reading from Grade 1 to 2 was investigated with 112 Taiwanese children. Phonological awareness (onset, rime, and tone), rudimentary orthographic awareness (character configuration and structure knowledge), and character reading were assessed in each grade. The strategy of learning to read novel characters using regular or sophisticated orthography-to-phonology correspondence rules or character mapping was tested in Grade 2. Our results suggested that (a) phonological and orthographic awarenesses are important in Grade 1, and tone awareness in Grade 1 uniquely predicts character reading in Grade 2; and (b) the use of sophisticated orthography-to-phonology correspondence rules and mapping strategy are crucial for character reading in Grades 1 and 2. In addition, phonological and rudimentary orthographic awarenesses are important for using sophisticated orthographic strategy when learning to read novel characters.

This cross-sectional study examined the development of morphological awareness in Greek children 4–7 years old. A distinction was adopted between epilinguistic control, evidenced in judgment tasks and indicative of elementary levels of awareness, and metalinguistic awareness, evidenced in production tasks and indicative of full-blown conscious awareness. The morphological domains of inflectional and derivational morphology were specifically contrasted to determine whether they follow distinct developmental trajectories. Trial-level performance data from 236 children in four morphological awareness tasks as a function of age were modeled using generalized additive models. Significant performance increase with age was found for all four awareness tasks. The results further indicated that production of derivational morphemes was consistently more difficult than production of inflectional morphemes and judgment of derivational morphemes, whereas the differences between the two inflectional and between the two judgment tasks were not significant. This suggests that at these ages, epilinguistic control is similarly effective for the two morphological domains whereas full metalinguistic awareness of derivational morphology trails behind that of inflectional morphology, at least as measured by these specific tasks. The findings highlight the need for early tracking and finer distinctions within the domain of morphological awareness, to identify and potentially enhance the critical skills related to the development of vocabulary and reading comprehension.

Speech disfluency in first language (L1) and second language (L2) is not only quantitatively different (e.g., number and length of pauses) but also qualitatively different (e.g., distribution of pauses); however, how pause distributions in L1 and L2 affect judgments of perceived fluency is unclear. The study examined the relationship between pause phenomena and perceived fluency using two experiments. Experiment 1 investigated the relative contributions of frequency, length, and distribution of silent pauses to perceived fluency of L2 speech. Experiment 2 tested causal effects of pause location on perceived fluency of L1 and L2 speech using phonetic manipulations. Findings suggest a significant role of pause location in perceived fluency. In Experiment 1, silent pause rate within a clause demonstrated the strongest correlation with L2 fluency ratings, and in Experiment 2, perceived fluency of L1 and L2 speech was influenced by pause location. The findings suggest that listeners seem to be sensitive to pause location and to understand that pauses within clauses tend to reflect reduced cognitive fluency.

The underlying processes of nonword repetition (NWR) have been studied extensively in both typical and atypical development. Most of the research examining long-term memory effects on NWR has focused on lexical and sublexical variables that can only be computed relative to the lexicon of a specific language (e.g., phonotactic probability). Sublexical variables that can be defined without reference to the lexicon (e.g., consonant age of acquisition; CAoA) have received little attention, although recent work has shown a CAoA effect on NWR in young adults by measuring performance differences when the stimuli comprise consonants acquired later versus earlier in speech development. The purpose of this study was to identify whether this sublexical effect occurs earlier in development. Thirty-one typically developing first and second graders completed NWR, nonword reading, and auditory lexical decision tasks. Nonword accuracy and word–nonword discriminability were consistently lower for items comprising later versus earlier acquired phonemes, even after controlling for vocabulary knowledge, but there were no differences in speed measures. Patterns of performance were similar to the CAoA effects observed in young adults from previous work. Results indicate that the sensitivity of NWR performance to these sublexical long-term memory effects occurs in childhood and reflects adultlike patterns of performance.

Both internal factors (e.g., nonverbal intelligence) and external factors (e.g., input quantity) are claimed to affect the rate of children's vocabulary development. However, it remains an open question whether these variables work similarly on bilingual children's dual language learning. The current paper examined this issue on 805 Singapore children (4 years, 1 month to 5 years, 8 months) who are learning English (societal language) and an ethnic language (Mandarin/Malay/Tamil). Singapore is a bilingual society; however, there is an inclination for English use at home in recent years, resulting in a discrepancy of input between English and ethnic languages in many families. In this study, internal and external factors were examined comprehensively with standardized tests and a parental questionnaire. Regression analysis was used to address the questions. There were statistically significant differences in language input quantity, quality, and output between English and ethnic language learning environments. Singapore children are learning English in an input-rich setting while learning their ethnic language in a comparatively input-poor setting. Multiple regressions revealed that while both sets of factors explained lexical knowledge in each language, the relative contribution is different for English and ethnic languages: internal factors explained more variance in English language vocabulary, whereas external factors were more important in explaining ethnic language knowledge. We attribute this difference to a threshold effect of external factors based on the critical mass hypothesis and call for special attention to learning context (input-rich vs. input-poor settings) for specific bilingual language studies.

An individual’s sense of the extent to which her or his body physically interacts with objects in the environment (body–object interaction; BOI) has been empirically shown to modulate lexical and semantic processing of object names. To allow for further exploration of the nature of those effects, BOI ratings for 750 Spanish nouns were obtained from 178 young adult participants. Statistical analyses showed moderate correlations between BOI indicators and some psycholinguistic indexes, such as word imageability and age of acquisition. In addition, an exploration of lexical associative relationships revealed that high-BOI words have a consistent tendency to be associated with words naming parts of the body. The ratings could be useful to researchers who are interested in manipulating or controlling for the effects of BOI in their language-processing studies. The complete norms are available for free downloading at Open Science Framework (https://osf.io/kd5vf/).

Using speakers of either African American English or Southern White English, we asked whether a working memory measure was linguistically unbiased, that is, equally able to distinguish between children with and without specific language impairment (SLI) across dialects, with similar error profiles and similar correlations to standardized test scores. We also examined whether the measure was affected by a child's nonmainstream dialect density. Fifty-three kindergarteners with SLI and 53 typically developing controls (70 African American English, 36 Southern White English) were given a size judgment working memory task, which involved reordering items by physical size before recall, as well as tests of syntax, vocabulary, intelligence, and nonmainstream density. Across dialects, children with SLI earned significantly poorer span scores than controls, and made more nonlist errors. Span and standardized language test performance were correlated; however, they were also both correlated with nonmainstream density. After partialing out density, span continued to differentiate the groups and correlate with syntax measures in both dialects. Thus, working memory performance can distinguish between children with and without SLI and is equally related to syntactic abilities across dialects. However, the correlation between span and nonmainstream dialect density indicates that processing-based verbal working memory tasks may not be as free from linguistic bias as often thought. Additional studies are needed to further explore this relationship.

In the context of 90 adult Japanese learners of English with diverse second language experience and 10 native speakers, this study examined the linguistic characteristics and learner profiles of low-, mid- and high-level fluency performance. The participants’ spontaneous speech samples were initially rated by 10 native listeners for global fluency on a 9-point scale (1 = dysfluent, 9 = very fluent), and then divided into four proficiency groups via cluster analyses: low (n = 29), mid (n = 30), high (n = 31), and native (n = 10). Next, the data set was analyzed for the number of pauses within/between clauses, articulation rate, and the frequency of repetitions/self-corrections. According to the results of a series of analyses of variance, the frequency of final-clause pauses differentiated low- and mid-level fluency performance; the number of mid-clause pauses differentiated mid- and high-level performance; and articulation rate differentiated high-level and nativelike performance. The analyses also found that the participants’ second language fluency was significantly associated with their length of residence profiles (0–18 years), but not with their age of arrival profiles (19–40 years).

Entrenchment and preemption are theorized to constrain the novel use of well-attested constructions. This study tested the effects of these two mechanisms in second language (L2) learners’ acceptance of English denominal verbs (DVs). Two groups of Chinese English-L2 speakers (fourth-year English major students and teachers of English) judged the acceptability of English locatum (e.g., Lucy watered the rose) and location (e.g., Lisa boxed the apples) DVs. Results based on both corpus and introspective frequencies show that the fourth-year learners’ judgments on the acceptability of all DVs were significantly negatively influenced by the frequency of nominal forms of the DVs, suggesting that entrenchment constrains L2 learners from accepting English DVs. Results based on introspective frequency demonstrate that the teachers’ judgments on the acceptability of all DVs were significantly negatively affected by the frequency of alternative verbs, demonstrating that preemption has a role to play in restricting L2 learners’ acceptance of English DVs. Moreover, the obtained DV frequency based on both corpus and learners’ introspection is a significant factor that helps all the participants’ acceptance of the English DVs, suggesting that the more frequently a DV is used, the more likely L2 learners are to judge it as acceptable.

American Sign Language (ASL) and English differ in linguistic resources available to express visual–spatial information. In a referential communication task, we examined the effect of language modality on the creation and mutual acceptance of reference to non-nameable figures. In both languages, description times reduced over iterations and references to the figures’ geometric properties (“shape-based reference”) declined over time in favor of expressions describing the figures’ resemblance to nameable objects (“analogy-based reference”). ASL signers maintained a preference for shape-based reference until the final (sixth) round, while English speakers transitioned toward analogy-based reference by Round 3. Analogy-based references were more time efficient (associated with shorter round description times). Round completion times were longer for ASL than for English, possibly due to gaze demands of the task and/or to more shape-based descriptions. Signers’ referring expressions remained unaffected by figure complexity while speakers preferred analogy-based expressions for complex figures and shape-based expressions for simple figures. Like speech, co-speech gestures decreased over iterations. Gestures primarily accompanied shape-based references, but listeners rarely looked at these gestures, suggesting that they were recruited to aid the speaker rather than the addressee. Overall, different linguistic resources (classifier constructions vs. geometric vocabulary) imposed distinct demands on referring strategies in ASL and English.