Cross-linguistic research on the development of tense-aspect marking has revealed a strong effect of lexical aspect. But the degree of this effect varies across languages. Explanation for this universal tendency and language-specific variation is still an open issue. This study investigates the early emergence and subsequent development of four grammatical aspect markers in Mandarin, -le (perfective), zai (progressive), -zhe (durative), and -guo (experiential), in the longitudinal speech data of four children acquiring Mandarin Chinese. It was found that the emergence of grammatical aspect marking generally follows the predictions of the aspect hypothesis, perfective -le predominantly appearing with telic verbs, whereas progressive zai is almost exclusively used with activity verbs. However, the typological features of Mandarin also affect the early uses of -le, which is used with stative predicates more frequently than predicted, and the input patterns play an important role in children's aspect marking. The results support a usage-based learning process in accord with a language-specific system of aspectual semantics, rather than a strong universal association of grammatical aspect and lexical aspect.

This Special Issue of Applied Psycholinguistics includes the third Keynote Article in our Journal. This format has been very successful, and thus far it has generated fruitful discussions in two areas of research: the relationship between nonword repetition and word learning (Gathercole, 2006) and grammatical processing in language learners (Clahsen & Felser, 2006).

Research and clinical practices often rely on an utterance unit for spoken language analysis. This paper calls attention to the problems encountered when identifying utterance boundaries in young children's spontaneous conversational speech. The results of a reliability study of utterance boundary assignment are described for 20 females with graduate professional education in speech–language pathology. They judged audiorecorded spontaneous speech samples that were elicited from 4-year-old children. Their agreement with each other (interobserver) was significantly lower than their self-agreement (intraobserver). Interobserver agreement varied with the length/grammatical complexity of response turns, and the number and types of selective boundary cues presented in the speech stimuli. The findings have research and clinical implications for the utterance as a conceptual notion and its use constraints.

This study examines syntactic and morphological aspects of the production and comprehension of pronouns by 99 typically developing French-speaking children aged 3 years, 5 months to 6 years, 5 months. A fine structural analysis of subject, object, and reflexive clitics suggests that whereas the object clitic chain crosses the subject chain, the reflexive clitic chain is nested within it. We argue that this structural difference introduces differences in processing complexity, chain crossing being more complex than nesting. In support of this analysis, both production and comprehension experiments show that children have more difficulty with object than with reflexive clitics (with more omissions in production and more erroneous judgments in sentences involving Principle B in comprehension). Concerning the morphological aspect, French subject and object pronouns agree in gender with their referent. We report serious difficulties with pronoun gender both in production and comprehension in children around the age of 4 (with nearly 30% errors in production and chance level judgments in comprehension), which tend to disappear by age 6. The distribution of errors further suggests that the masculine gender is processed as the default value. These findings provide further insights into the relationship between comprehension and production in the acquisition process.

Lying is a deliberate attempt to transmit messages that mislead others. Analysis of language behaviors holds great promise as an objective method of detecting deception. The current study reports on the frequency of use and acoustic nature of “um” and “like” during laboratory-elicited lying versus truth-telling. Results obtained using a within-participants false opinion paradigm showed that instances of “um” occur less frequently and are of shorter duration during lying compared to truth-telling. There were no significant differences in relation to “like.” These findings contribute to our understanding of the linguistic markers of deception behavior. They also assist in our understanding of the role of “um” in communication more generally. Our results suggest that “um” may not be accurately conceptualized as a filled pause/hesitation or speech disfluency/error whose increased usage coincides with increased cognitive load or increased arousal during lying. It may instead carry a lexical status similar to interjections and form an important part of authentic, effortless communication, which is somewhat lacking during lying.

In the present study, morphological structure processing of Chinese compounds was explored using a visual priming lexical decision task among 21 Hong Kong college students. Two compounding structures were compared. The first type was the subordinate, in which one morpheme modifies the other (e.g., 籃 球 [laam4 kau4, basket-ball, basketball]), similar to most English compounds (e.g., a snowman is a man made of snow and toothpaste is a paste for teeth; the second morpheme is the “head,” modified morpheme). The second type was the coordinative, in which both morphemes contribute equally to the meaning of the word. An example in Chinese is 花 草 (faa1 cou2, flower grass, i.e., plant). There are virtually no examples of this type in English, but an approximate equivalent phrase might be in and out, in which neither in nor out is more important than the other in comprising the expression. For the subordinate Chinese compound words, the same structure in prime and target facilitated the semantic priming effect, whereas for coordinative Chinese compound words, the same structure across prime and target inhibited the semantic priming effect. Results suggest that lexical processing of Chinese compounds is influenced by compounding structure processing.

Research at the interface of bilingual development and child language disorders has increased greatly in the past decade. The purpose of this article is to highlight the theoretical and clinical implications of this research. Studies examining the similarities in linguistic characteristics between typically developing sequential bilingual children and monolingual children with specific language impairment (SLI) the same age are reviewed in light of predictions from a maturational model of SLI. Studies examining the linguistic characteristics of bilingual children with SLI compared to monolinguals with SLI and their bilingual peers with typical development are reviewed in light of predictions of limited processing capacity theories of SLI. It is shown that data from bilingual children pose interesting challenges to both theoretical perspectives, although in different ways. Finally, the findings from this research are discussed in terms of their relevance for assessment of SLI in bilingual children.

Verbs are one of the basic building blocks of grammar, yet few studies have examined the grammatical, morphological, and phonological factors contributing to lexical access and production of Spanish verb inflection. This report describes an online data set that incorporates psycholinguistic dimensions for 50 of the most common early-acquired Spanish verbs. Using this data set, predictors of response time (RT) from stimulus onset and mean differences at offset are examined. Native Spanish speakers, randomly assigned to one of two tasks, listened to prerecorded verbs and either repeated the verb (single word shadowing) or produced its corresponding pronoun. Factors such as stimulus duration, number of syllables, syllable stress position, and specific levels of initial phoneme facilitated both shadowing of a verb and production of its pronoun. Higher frequency verbs facilitated faster verb repetition, whereas verbs with alternative pronouns increased RT to pronoun production. Mean differences at offset (stimulus duration is removed) indicated that listeners begin speaking earlier when the verb is longer and multisyllabic compared to shorter, monosyllabic words. These results highlight the association between psycholinguistic factors and RT measures of verb processing, in particular, features unique to languages like Spanish, such as alternative pronoun and tense.

Only a decade ago, a very few researchers considered the study of language disorders in bilingual population worth pursuing. It was mostly argued that there were enough challenges in studying bilingualism, and even more challenges in the study of specific language impairment (SLI). So why complicate things and combine the two domains?

Few researchers would doubt that ultimate attainment in second language grammar is negatively correlated with age of acquisition, but considerable controversy remains about the nature of this relationship: the exact shape of the age-attainment function and its interpretation. This article presents two parallel studies with native speakers of Russian: one on the acquisition of English as a second language in North America (n = 76), and one on the acquisition of Hebrew as a second language in Israel (n = 64). Despite the very different nature of the languages being learned, the two studies show very similar results. When age at testing is partialed out, the data reveal a steep decline in the learning of grammar before age 18 in both groups, followed by an essentially horizontal slope until age 40. This is interpreted as evidence in favor of the critical period. Both groups show a significant correlation between ultimate attainment and verbal aptitude for the adult learners, but not for the early learners. This is interpreted as further evidence that the learning processes in childhood and adulthood not only yield different levels of proficiency but are also different in nature.

This study examined adult English native speakers' processing of sentences in which pronominal case marking conflicts with word order. Previous research has shown that English speakers rely heavily on word order for assigning case roles during sentence interpretation. However, in terms of cue reliability measures, we should expect English pronominal case to be nearly as strong a cue as word order. The current study examined this issue by asking subjects to interpret grammatical and ungrammatical sentences in which case competes with word order. The results indicated that word order remains the strongest cue in English, even when the case-marking cue is available. However, for noncanonical word orders, the case-marking cue had a strong effect on sentence interpretation.

The influences of early phonological awareness and naming speed on Dutch children's later word spelling were investigated in a longitudinal study. Phonological awareness and naming speed predicted spelling in early Grade 1, later Grade 1, and later Grade 2. Phonological awareness, however, predominated over naming speed for the prediction of early Grade 1 spelling. Comparison of the present results with those from an earlier study of children's word recognition using the same dataset and also structural equation modeling showed word recognition speed at the ends of Grades 1 and 2 in the earlier study to be uniquely predicted by early naming speed. Nonetheless, naming speed may measure almost the same in word recognition and word spelling accuracy.

This study explored the second language perceptual accuracy of Japanese geminates (moraic units) by English-speaking learners at three proficiency levels: beginner (28), low–intermediate (42), and advanced (15). Stimuli included singleton and geminate /t/, /k/, /s/ followed by /a/ or /u/ produced by a native speaker in isolated words and carrier sentences. Results of a forced-choice identification task revealed a significant complex interaction involving all factors. Simple effects tests indicated scores for geminate /s/ followed by /u/ in carrier sentences were significantly lower across proficiency levels. The singleton-geminate contrast for /t, k/ was significant for beginning learners, marginal for low–intermediate, and nonsignificant for advanced. Duration differences did not account for all findings. Greater consonant–vowel sonority difference facilitated perception, enhancing mora boundaries for speech segmentation.

A longitudinal study compared the effects of distributed and massed practice schedules on the learning of second language English syntax. Participants were taught distinctions in the tense and aspect systems of English at short and long practice intervals. They were then tested at short and long intervals. The results showed that distributed practice led to superior test scores on the long-term tests, indicating that the learning of second language syntax can benefit from distributed practice in a manner very similar to that reported for other skills and information types in the experimental psychology literature. Implications for intensive language-leaning programs and syllabus design in general are discussed.

The words people use and the way they use them can reveal a great deal about their mental states when they attempt to deceive. The challenge for researchers is how to reliably distinguish the linguistic features that characterize these hidden states. In this study, we use a natural language processing tool called Coh-Metrix to evaluate deceptive and truthful conversations that occur within a context of computer-mediated communication. Coh-Metrix is unique in that it tracks linguistic features based on cognitive and social factors that are hypothesized to influence deception. The results from Coh-Metrix are compared to linguistic features reported in previous independent research, which used a natural language processing tool called Linguistic Inquiry and Word Count. The comparison reveals converging and contrasting alignment for several linguistic features and establishes new insights on deceptive language and its use in conversation.

The cross-overs between monolingual–bilingual and typically atypically developing children are a goldmine for research on language development. The four permutations of language exposure and language abilities create “natural experimental conditions” for investigating the nature of the language capacity and how this is shaped by input in typical development, and importantly, in specific language impairment (SLI). Paradis has played a prominent part in identifying and exploring this rich source of evidence. Her Keynote Article provides a valuable review of findings from her own and others' research, a carefully considered evaluation of their compatibility with competing theories of language development, and an excellent catalyst for debate.

Sixteen children (17 age mates, 17 vocabulary mates) with specific language impairment (SLI) participated in two studies. In the first, they named fantasy objects. All groups coined novel noun–noun compounds on a majority of trials but only the SLI group had difficulty ordering the nouns as dictated by semantic context. In the second study, the children described the meaning of conventional noun–noun compounds. The SLI and AM groups did not differ in parsing the nouns, but the SLI group was poorer at explaining the semantic relationships between them. Compared to vocabulary mates, a larger proportion of the SLI group successfully parsed the compounds but a smaller proportion could explain them. These difficulties may reflect problems in the development of links within the semantic lexicon.

The Keynote Article is a very welcomed, timely, and incisive review article that examines theoretical and clinical implications of research on bilingual development and specific language impairment (SLI). Paradis provides a considered examination of the available evidence and takes into account a number of potential influencing factors. In particular, I want to commend her discussion of potential compensatory mechanisms that may play a role in bilingual development in SLI. This is often a neglected area in discussions concerning SLI. I also want to highlight that I agree wholeheartedly with her conclusion that the evidence to date “leans toward a positive attitude toward dual language learning for children with SLI who are in a supportive context for bilingualism.” This message is by no means universally accepted, nor is it put into action in therapeutic contexts across the United Kingdom and Europe. There is still much debate as to what type of advice should be given to parents and what the target language or languages of therapy should be (Harulow, 2008). This review article has therefore the potential not only to make a significant contribution to theory but also to practice.

This study explores the possibility of cross-language activation when bilinguals process number words in their first language (Italian) and their second language (German). Italian monolinguals (Experiment 1), German monolinguals (Experiment 2), and Italian/German bilinguals (Experiment 3) were required to decide the larger of two number words while the unit–decade compatibility effect was examined. For compatible trials the decade and unit comparisons lead to the same response (e.g., 24–67), whereas for incompatible trials the decade and unit comparisons lead to different responses (e.g., 27–64). The regular unit–decade compatibility effect was significant when bilinguals and monolinguals performed the comparison in German. However, this effect was not found when bilinguals and monolinguals performed the task in Italian. In addition, the decade distance played a major role when bilinguals processed in their first language, whereas the unit distance was more important when they worked in their second language. These results indicate that the processing of number words in one language is not modulated by the way bilinguals process number words in their alternative language.

In two studies we investigated 2-year-old children's answers to predicate-focus questions depending on the preceding context. Children were presented with a successive series of short video clips showing transitive actions (e.g., frog washing duck) in which either the action (action-new) or the patient (patient-new) was the changing, and therefore new, element. During the last scene the experimenter asked the question (e.g., “What's the frog doing now?”). We found that children expressed the action and the patient in the patient-new condition but expressed only the action in the action-new condition. These results show that children are sensitive to both the predicate-focus question and newness in context. A further finding was that children expressed new patients in their answers more often when there was a verbal context prior to the questions than when there was not.